Electronics

If you're not using a power meter and tracking your watts, then you're giving the competition an advangage. SRAM's Quarq CinQo Power Meter integrates into the crank spider for easy installation, low weight, and minimal maintenance. It's ANT+ wireless compatible, enabling you to use the head unit of your choice (sold separately), and it has no wires or external sensors, which means that your beautifully sleek road machine stays clutter-free. Since the power sensor is in the crank, you can easily switch wheels for race day. Other nice features include an easily replaced battery (no overnight charging!) and a wattage reading accuracy of +/- 2%. Also, calibration values are stored in the CinQo so there's no need to re-calibrate if you switch head units.

The SRAM RED AXS power meter breaks with tradition — and breaks through to new levels of performance. SRAM reengineered road gearing: reducing front chainring size and adding more range to the rear cassette. They also maintained a 13-tooth delta on all chainring pairs, ensuring precise shifting for any setup. This results in more useful gearing and better shifting across all configurations. These power meters are also designed with Quarq's premier DZero power measurement technology fully integrated into the crankset. Welcome to the pinnacle of the power meter. - X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear - Integrated power measurement - Power meter is fully integrated into the chainring set for lighter weight - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - Improved front shifting performance for crisp and accurate front shifts - Unique chainring shape results in a lighter weight, stiffer, more durable crankset - Integrated chainring design significantly reduces weight - DUB bottom bracket adds durability, simplicity and broad compatibility - Speeds: 12 - BB Compatibility: All SRAM Road DUB BBs - BB Spindle Interface: DUB - Chainring material: Aluminum - Crank arm material: Carbon - Power Meter Type: ANT+ and BLE - Bottom bracket not included

Rally XC200 is tested to the extreme, so you can ride there too. This dual-sensing power meter delivers reliable power measurements and is easy to transfer between bikes, no matter what bike you're on or where you're riding. - Impeccably Designed Pedal—Rally power meters have undergone rigorous testing to increase reliability. Featuring a superior design with sensors housed inside, these sleek pedals install like any pedal. And they're quick to transfer between bikes. - Advanced Cycling Dynamics—In addition to total power and cadence, Rally XC200 measures much more. These metrics help you identify your strengths and weaknesses, so you can work to improve. - Left/Right Balance—Measure power from your left leg versus power from your right leg to get a better look at how symmetrically you're producing power. - Seated vs. Standing—Track the amount of time you spend in each position and gauge position effectiveness. - Power Phase—Get a clear look at where you're producing power in the pedal stroke. - Platform Center Offset—Ensure proper cleat position by keeping track of where power is applied on the pedal. - Cleat Compatibility—For a comfortable ride, these pedals are designed to fit your favorite Shimano SPD cleats. - Transferable Spindle—From road to gravel to cyclocross and much more, keep riding year-round with a transferable spindle that can be installed in the Rally RS/Rally RK road pedal body kits (each sold separately). - Battery Life—Make sure you're ready for those long rides and training sessions with up to 120 hours of battery life. Specs: - Battery type: LR44/SR44 (x4) - Battery life: up to 120 hours (with LR44 battery type) - Weight: 316g - Water resistance: IPX7 - Max. rider weight: 105kg - Accuracy: +/- 1.0% - Cleat type: Shimano SPD - Q-factor: 53/55mm with supplied spacing washer - Stack height: 13.5mm - Field calibration - Adjustable release tension - Garmin Connect - Measurement location: Spindle - Communication: ANT+ and Bluetooth In the Box: - Rally XC200 pedals - Cleat hardware - 55mm Q-factor washers - Documentation

All day, every day—the epix Pro smartwatch helps you conquer every hour. This ultimate high-performance smartwatch features a stunning AMOLED display. Go longer between charges with up to weeks of battery life in smartwatch mode. Rise to any challenge with advanced training features; hill score measures your climbing performance over time, and real-time stamina updates gauge your stamina potential. The bright LED flashlight provides convenient illumination when you need it. Prioritize your mental and physical wellness with 24/7 health monitoring features such as advanced sleep tracking, HRV status and more (data presented is intended to be a close estimation of metrics tracked). Download TopoActive maps from around the world to keep your explorations on track. Navigate on the slopes with 2,000 preloaded ski resort maps worldwide. Gain superior positioning accuracy in any environment while optimizing battery life, thanks to multi-band and multi GNSS with SatIQ technology.

Edge 1040 Solar is powered by the sun and packed with everything under it. It's our first GPS bike computer with solar charging and multi-band GNSS technology, so you can ride longer and get even better coverage under dense tree cover or the urban canyon. The Edge 1040 Solar bike computer also has performance features that help you understand your strengths and weaknesses. When paired with your compatible sensors, it can even help you manage your efforts by providing power targets throughout a course and stamina feature insights, so you know how much gas is left in the tank. And the setup is simple, so you can take it out of the box and be out riding in no time.

Enjoy the ultimate advantage of freedom and adventure that Eagle provides combined with the Quarq power meter platform that delivers on accuracy and reliability. The SRAM Eagle XX1 power meter is built to pair with the SRAM Eagle drivetrains, providing a significantly quieter performance and extraordinary durability. Take it on the dirtiest, gnarliest trails while maintaining confidence in your cycling components. You came to perform; the Eagle XX1 power meter will perform with you. You are working hard, pushing yourself to new heights in some of the toughest conditions. Ride with confidence knowing that your power meter will not quit when you need it the most. Enjoy up to 200 hours of ride time in any weather or trail condition with its IPX7 waterproof rating and 10k temperature compensation; if harsh environments do not hold you back, then you need a product capable of rising to the occasion. The Eagle XX1 power meter is designed to be rough-and-tumble tough. Train harder, ride faster and unlock your ultimate potential. The Eagle XX1 power meter brings simplicity and ease-of-use to your training. With MagicZero automatic calibration, there is no need to worry about calibrating before you ride; just jump on your bike and go. The Eagle XX1 also features Bluetooth low energy and ANT+ wireless data transfer, delivering power output information directly to your cycling computer. - Speeds: 11/12 - BB Compatibility: DUB:BSA73, PF89.5, PF92, PF30 MTB73, BB30 MTB73, BSA MTB68SP - Bolt Circle Diameter (BCD): 104 BCD - Chainline: 52.0mm - BB Spindle Interface: DUB - Power Meter Type: ANT+ and BLE - Crank Arms/Chainrings not included

The XX Eagle T-Type AXS™ Wide left crankarm with Power Meter spindle utilizes SRAM's World stage proven XX crank arm with a subtly integrated power meter to record and deliver live, accurate power readings to your head unit. We achieve this by utilizing what SRAM calls “DUB-PWR” – a unique design that elegantly houses Quarq’s reliable and accurate power measurement inside the DUB crank spindle itself. Measuring left-side power to calculate total watts, it’s subtle, lightweight, compatible with any chainring setup, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS™ enabled components. No-compromise, no-fuss data delivery giving you an edge over the competition. - Innovative "DUB-PWR" design allows for lightweight, subtle Quarq power integration - Compatible with RockShox Flight Attendant - +/-3% accuracy means you'll always know your true watts output - Long battery life provides 400+ hours of usage - Waterproof (IPX7 waterproof to 1 meter for 30 minutes - Right arm, Bottom bracket, Chainring and Spider NOT included

Never stop cycling with Edge 1040. It's our first GPS bike computer with multi-band GNSS technology for even better coverage under dense tree cover, on remote mountain trails and even in the urban canyon. It's also packed with performance features that help you understand your strengths and weaknesses to coach you through any challenge. When paired with your compatible sensors, it can even help you manage your efforts by providing power targets throughout a course and stamina feature insights, so you know how much gas is left in the tank. And the setup is simple, so you can take it out of the box and be out riding in no time.

Introduce the rider you are today to the one you’ll be tomorrow. The Edge® 840 Solar touchscreen cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Ride longer with solar charging, and get superior accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any environment matched with a responsive touchscreen so you can tap, pan and swipe on the fly. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.

The EPS Power Unit is the systems source of power as well as the "brain" of the system, responsible for managing the battery pack, enabling and monitoring the front and rear derailleurs and communicating with the Interface Unit. - Weathertight, o-ring sealed connectors - Lithium Ion battery duration: 500km/month - 1500km, 1000km/month - 1800km, 2000km/month - 2000km - Water proof to 1m for 30 minutes (IP67 Rated) - Operational temperature: -4F to 140F - Charging temperature: 32F to 113F - The V4 power unit features 10% better battery duration - 16.6mm diameter for easy seatpost installation - 259mm length

Performance GPS Cycling Computer with Mapping and Touchscreen - Dynamic performance monitoring provides insights on your VO2 max, recovery, training load focus, heat and altitude acclimation, nutrition, hydration and more - MTB dynamics track jump count, jump distance and hang time as well as Grit, a measure of the ride’s difficulty, and Flow, which tracks the smoothness of your descent so you have a score to beat next time - Cycling safety features include new bike alarm, group messaging and tracking, assistance and compatibility with Varia rearview radar and lights so you can see and be seen - includes routable Garmin Cycle Map with popularity routing — which helps you ride like a local — plus on-device route creation, off-course recalculation and back to start; integrated Trailforks data includes trail difficulty ratings - Customize with free apps widgets and data fields from the Connect iQ Store - Battery life: up to 20 hours with GPS; extendable up to 40 hours with the Garmin Charge power pack or in battery save mode - Speed sensor, Cadence sensor and Heart rate monitor Who cares that the Edge 830 touchscreen cycling computer puts trail maps and ratings at your fingertips and offers insights to help you improve? You do. So, whether you’re an enduro extremist, a black diamond expert or somewhere in between, Edge 830 is ready to tame the trails with you. In The Box - Edge 830 - Flush out-front mount - Standard mount - Speed sensor - Cadence sensor - Heart rate monitor - Tether - USB cable - Documentation

Lead the pack with Forerunner 955, the premium GPS running and triathlon smartwatch. The training readiness feature tells you when you're primed for a productive session, while daily suggested workouts adapt to your performance and recovery alongside the race widget, which provides training tips, course details and completion time predictions. With morning report, you can get an overview of your sleep, recovery, training and more—as well as a picture of your overall health with heart rate variability (HRV) status (This device is intended to give an estimate of your activity and metrics). On the run, new multi-band GPS and full-color, built-in maps, help you navigate confidently. And with traditional buttons and a touch display, it has never been easier to tap into your training status and know whether you're training productively, peaking or strained. If you're pushing toward the podium—or to the very limits—Forerunner 955 is by your side with up to 15 days of battery life in smartwatch mode.

- AXS enabled for easy monitoring and firmware upgrades - Bluetooth Low Energy and ANT+ compatible - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - Uses a common CR2032 battery that last for 200 riding hours and changes without tools - Power-upgrade compatible with the following RED and Force eTap AXS cranksets: RED 1x: 36T-46T, Force 1x: 36T-46T, Force 2x: 33/46, 35/48 - Bolt Circle Diameter (BCD): 107 BCD - Power Meter Type: ANT USB

Introduce the rider you are today to the one you’ll be tomorrow. The Edge® 540 cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Get superior positional accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any conditions. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.

Introduce the rider you are today to the one you’ll be tomorrow. The Edge® 840 touchscreen cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Get superior accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any environment matched with a responsive touchscreen so you can tap, pan and swipe on the fly. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.

Introduce the rider you are today to the one you’ll be tomorrow. The Edge® 540 Solar cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Ride longer with solar charging, and get superior positional accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any conditions. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones

Train brilliantly with the Forerunner® 265 GPS running smartwatch. Its colorful AMOLED touchscreen display stands out while the training readiness feature — which tells you when you’re primed for a productive session — helps you crush your goals. Wake up to your morning report with HRV status to see health insights alongside an overview of sleep, recovery and training outlook (data presented is intended to be a close estimation of metrics tracked). Plan your race strategy with the race widget, which enables personalized daily suggested workouts that adapt to performance, recovery, the race you’re running and its course. Get ready to make the most of every run with wrist-based running power and multi-band GPS. And when you want to switch it up with cross training, choose from more than 30 activity profiles, including triathlons, cycling, swimming and more. Get a more complete picture of your health, not just a glimpse, from your Forerunner 265 with up to 13 days of battery life in smartwatch mode.

- Go longer than ever with solar charging that gives you unlimited battery life in smartwatch mode (assuming all-day wear with 3 hours per day outside in 50,000 lux conditions) - Rugged GPS smartwatch is water-rated to 100 meters and thermal- and shock resistant with fiber-reinforced polymer case and scratch-resistant Corning Gorilla glass - Built-in sports apps to take on running, biking, swimming, strength training and more; plus, VO2 Max and other training features - Live the ultimate connected life with smart notifications and Connect IQ compatibility when paired with your compatible smartphone. - Track your adventures with the built-in 3-axis compass and barometric altimeter, plus multiple global navigation satellite systems (GPS, GLONASS and Galileo)

Performance GPS Cycling Computer with Mapping and Touchscreen - Dynamic performance monitoring provides insights on your VO2 max, recovery, training load focus, heat and altitude acclimation, nutrition, hydration and more - Cycling safety features include new bike alarm, group messaging and tracking, incident detection and compatibility with Varia rearview radar and lights so you can see and be seen - Includes routable Garmin Cycle Map with popularity routing — which helps you ride like a local — plus on-device route creation, off-course recalculation and back to start; mountain biking model has integrated Trailforks data, including trail difficulty ratings - Customize with free apps, widgets and data fields from the Connect iQ Store - MTB dynamics track jump count, jump distance and hang time as well as Grit, a measure of the ride’s difficulty, and Flow, which tracks the smoothness of your descent so you have a score to beat next time - Battery life: up to 20 hours with GPS; extendable up to 40 hours with the Garmin Charge power pack or in battery save mode Who cares that the Edge 830 touchscreen cycling computer offers dynamic performance monitoring and insights to help you improve? You do. So, whether you’re a podium finisher, Kona qualifier, gravel grinder, straight-shaven, urban pedaler, dirt ball or somewhere in between, Edge 830 is ready to roll as your new riding partner. In The Box - Edge 830 - Flush out-front mount - Standard mount - Tether - USB cable - Documentation

Discover new routes, and ride with confidence using the Edge Explore 2 GPS cycling computer This navigator features a bright 3" touchscreen display, and it's simple to set up and ready to ride straight out of the box. - Ride like a local during your next on- or off-road adventure - High-contrast maps provide bike-specific, turn-by-turn navigation — and highlight popular roads and trails along with high-traffic areas - When connected to your compatible eBike, receive navigation guidance and alerts based on your bike's battery status, assist level and range - Plus, safety features such as incident detection and Assistance let you ride with greater peace of mind (Requires setup and your smartphone to be in an area with network coverage)

It sees what you can't. Varia RCT715 rearview radar with camera and tail light continuously records your ride and automatically saves footage before, during and after events if it detects an incident. The bright tail light makes you more visible to motorists. And Varia RCT715 integrates seamlessly with your Garmin bike computer or the Varia mobile app on your paired compatible smartphone to alert you to traffic as you ride. The app allows for live video viewing for camera setup, plus video transfer so you can replay footage postride. A selection of operation modes lets you flex camera and tail light features to maximize battery life for longer rides.

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. - An elegant,integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Wide chainline crankset for bikes with up to 700x45c or 27.5x2.1" tire widths (43/30T chainrings only) - BB not included

Introduce the rider you are today to the one you’ll be tomorrow. The Edge® 540 cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Get superior positional accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any conditions. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.

Run at a higher level with the Forerunner 255S smartwatch. These running smartwatches help you train and recover smarter with training status, running power, multi-band GPS and daily suggested workouts that adapt to your performance and goals. Plus, other new features—such as race widget—help you plan your race-day strategy, and morning report with HRV status reveals your overall health alongside the day ahead. And with Garmin Pay contactless payments with a supported card, it's never been easier to buy that post-workout coffee—no matter how you work out—with more than 30 activity profiles, including triathlon, cycling, swimming and more. With Forerunner 255, you can get a continuous picture of your health, from training and recovery to sleep quality and overall wellness—and with up to 12 days of battery life in smartwatch mode and up to 26 hours in GPS mode. - Case size: 41mm

The X0 Eagle T-Type AXS™ Wide left crankarm with Power Meter spindle provides riders with accurate, live power data delivery housed in our most advanced aluminum crankset. The power meter technology is integrated through what SRAM calls “DUB-PWR” – a unique design that elegantly houses Quarq’s reliable and accurate power measurement inside the DUB crank spindle itself. Measuring left-side power to calculate total watts, it’s subtle, lightweight, compatible with any chainring setup, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS™ enabled components. No-compromise, no-fuss data delivery with robustness in mind. - Innovative "DUB-PWR" design allows for lightweight, subtle Quarq power integration - Compatible with RockShox Flight Attendant - Unique, groundbreaking design integrated with one of the lightest aluminum cranksets on the market - +/-3% accuracy means you'll always know your true watts output - Long battery life provides 400+ hours of usage - Waterproof (IPX7 waterproof to 1 meter for 30 minutes - Right arm, Bottom bracket, Chainring and Spider NOT included

Versatile and clever The Nyon is the perfect companion for embarking on your fully connected eBike experience. Nyon connects to your smartphone with the eBike Connect app and exchanges data about routes and activities. The color display serves as an intelligent guide when you are exploring new places and as your personal trainer by providing you with fitness data. The touch screen makes the all-in-one computer both intuitive and easy to use and is operated using the separate control unit during your ride. Whether you're using your eBike for long rides or short everyday trips, the robust, easy-to-read display ensures that you are ready for all requirements and weather conditions. The Nyon computer – for a smarter, more intuitive and connected generation. This is what Connected Biking feels like. Simple operation A convenient option: Nyon is intuitive to use thanks to the touch screen function and can be operated using the separate control unit during your ride. Award-winning design Impressive both inside and out: The 3.2-inch high-resolution color display combines smart functions with an elegant design that has won a Red Dot Design Award. Easy to read A clear view in any light: The display brightness and backlight automatically adapt to the ambient light. A special coating reduces glare and finger marks. You can choose between a dark and a bright display with maximum contrast. Individual screens Focus on the essential: You can customize the user interface of the display to suit your specific requirements. This gives you a clear view of the information that you need at all times. Always ready for action Whatever the weather: The touch screen of the robust display remains fully functional even when exposed to rain or dust and can be operated while wearing bike gloves. Savings Screen If you want to find out how much you could save by choosing to use your eBike instead of a car, check out the info on the new Savings Screen. This is activated in the screen management settings. You can also see a comparison of the current and previous weeks, or choose a different currency in the settings. Smart connectivity functions Perfectly connected: Nyon is part of an intelligently connected system and opens the door to the connected eBike World of Bosch thanks to the eBike Connect smartphone app and an online portal. Data synchronization Constant communication: As soon as Nyon connects to your smartphone or Wi-Fi, the computer connects to your eBike Connect account and automatically synchronizes the riding data. Choose your ideal position Optimum position: To ensure the best possible readability, the display mount has two installation positions. The center mounting position above the handlebar is designed to meet the needs of eMTB riders, while tour riders can place the mount further forward. One device, several users One for all: You can share your Nyon with friends or family – everyone can then synchronize their riding data with their own account. Software updates Always up-to-date: Software updates or new maps can be conveniently downloaded and installed over the air.

Discover new routes, and ride with confidence using the Edge Explore 2 GPS cycling computer This navigator features a bright 3” touchscreen display, and it’s simple to set up and ready to ride straight out of the box - Ride like a local during your next on- or off-road adventure - High-contrast maps provide bike-specific, turn-by-turn navigation — and highlight popular roads and trails along with high-traffic areas - When connected to your compatible eBike, receive navigation guidance and alerts based on your bike’s battery status, assist level and range - Plus, safety features such as incident detection and Assistance let you ride with greater peace of mind (Requires setup and your smartphone to be in an area with network coverage) - Computer Type: Wireless - GPS: Yes - Connectivity: ANT+, BT, Wi-Fi - Customizable Screen: Yes - Battery Type: Lithium Ion - Touchscreen: Yes - External Sensor Compatibility: Speed/Cadence/HR/Power

It’s got your back while you ride ahead. Varia™ eRTL615 rearview radar for eBikes is our first battery-free radar. It plugs directly into your compatible eBike. It detects cars approaching from behind and provides audible and visible alerts when paired with your compatible Garmin smartwatch, bike computer or even your smartphone with the Varia™ app. This radar also has a bright tail light to make you more visible to motorists, adding peace of mind to every ride. And since you don’t have to charge it between rides, that’s one less thing to worry about.

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. It's invisible technology that adds minimal weight and will help you get to the finish line faster, and it can be used to upgrade any eTap AXS bike. - An elegant, integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Simple and affordable power meter upgrade option - Right Arm/BB/Spider/Chainrings NOT INCLUDED

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. It's invisible technology that adds minimal weight and will help you get to the finish line faster, and it can be used to upgrade any eTap AXS bike. - An elegant, integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Simple and affordable power meter upgrade option - Right Arm/BB/Spider/Chainrings NOT INCLUDED