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Electronics

Cycle Computers & Electronics

Keep track of your ride and fitness with one of our great cycling computers or heart rate monitors.

From basic features like speed and distance to advance options like power and altimeter our computers and heart rate monitors offer performance, reliability and ease of use to let you know how far, how fast and how hard you rode.

Cycle computers are also great for letting you know when your bike needs a tune up.  

Check out our Handy Dandy Bike Maintenance Chart!

$483.00
- 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
$74.99
An elegant ANT+ cycling computer that’s simple to set up, intuitive to operate, and has a large, easy-to-read screen. Know your ride Change the way you ride with the RIDEtime Elite Cycling Computer. It's easy to pair with compatible ANT+ sensors for real-time speed, cadence, and power data so you can target more productive workouts and better recovery rides. Simple setup and an intuitive one-button interface get you riding faster, while features such as auto start/stop and auto light control help you take charge of your ride. Product details - 2” easy-to-read screen features a programmable backlight and customizable tri-field display - Features auto start/stop, auto clear, and auto light control with customizable hands-free scan modes - Tri-field display lets you see three functions at once (speed, cadence, heart rate, power) - Displays Trek Certified Service reminders based on your selected bicycle type - Displays distance (trip/total), time (clock, timer), and calories burned - Track your speed, heart rate, power, cadence (current, average, max) - Includes sleek out-front mount and is also Blendr compatible - Requires ANT+ compatible sensor such as DuoTrap S or Interchange Combo Sensor - Battery: CR2032 (Coin) - Weight: 40g
$39.99
The Wahoo RPM cadence sensor is your sleek little solution for measuring cycling cadence data. It is wireless, magnet-less, lightweight, and easily mounts to your bike's crank arm or to your shoe. Bluetooth Smart and ANT+ dual band technology allows you to connect to and display data on both smartphones and GPS bike computers. Collecting cadence data has never been this easy. - Both ANT+ and Bluetooth Smart capabilities allow for a wireless connection to both smartphones and bike computers. - No tangled wires on your bike to connect the sensor to your device. - It only weighs 7 grams! - Provides accurate cadence data during your ride - (1) mount with double sided 3M tape, or (2) use the silicone sleeve and mount with zip ties. - The RPM can be worn on your shoe for spin classes or use with multiple bikes - Two LED lights show the sensor's device connection (blue) and cadence detection (red) - No charging required! Operates on a coin cell battery for up to 1 years. - RPM cadence sensor will fit with most bikes and frame sizes
$24.99
The Protege Series are great for training, touring, or keeping track of car-free miles. - Four-line, easy-to-read macromonitor LCD display provides up to five pieces of data at a glance - Heavy-duty, oversized wire harness and ultrasonically welded case ensure a durable, weatherproof unit - Mode changing is easy: push the computer forward in the spring loaded bracket- the computer is the button - Auto start/stop and LCD shut off - Fits 25.0-31.8mm handlebars - Weight: 57 grams with bracket and sensor - Case size: 40mm x 47mm - Height (w/ bracket): 27 mm
$645.00
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
$429.00
Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The DFour DUB was designed specifically for Dura-Ace R9100 chainrings. Train using a Quarq power meter without changing your drivetrain. 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 condition with its IPX7 waterproof rating and 10k temperature compensation; if harsh climates do not hold you back, then you need a product capable of rising to the occasion. That is exactly what the DFour DUB power meter is made for. Train harder, ride faster, and unlock your ultimate potential. The DFour DUB 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. DFour DUB features Bluetooth low energy and ANT+ wireless data transfer, delivering power output information directly to your cycling computer. Features - Bluetooth low-energy technology and ANT+ wireless data transfer - MagicZero - automatically checks and recalibrates your power meter as you ride – no need to manually calibrate - AxCad - no cadence magnet required - 10K Temperature Compensation - Battery - CR2032, 200-hour battery life, change without tools - OmniCal - swap chainrings without affecting accuracy - 2-year warranty - IPX7 waterproof rating - Accuracy - within 1.5%, measuring both legs
$263.00
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
$368.00
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 the widest gravel tires
$43.99
Best In Class You're never more than an arm's reach from your smartphone, and Delta's bicycle phone mount provides convenient and visible placement for your phone. With your phone securely mounted to your stem OR handlebar, with multiple options available, you can use navigation apps to reach your destination and always stay connected to loved ones with proprietary access to Face ID and Touch ID for new generation devices. Features Secure Display - Built-in locking mechanism ensures your mobile phone is securely held and mounted to your bicycle yet is adjustable for convenient display while riding. Multiple Mounting Options - Included handlebar and stem cap mounts allow you to position your phone in your desired location, suitable for every bike. Includes additional ElastoMount to connect to any bar and for quick on/off. Secures to handlebar diameters up to 1 3/8"/35 mm Accessible - Stretch fit design provides easy in & out access to your device—spend more time riding and less time fumbling during an important call or when a change of route is needed. Trusted Quality - Integrated silicone bumpers protect your mobile device from scratches and reduce vibration while riding. Don't let rough patches or bumps deter you from your adventurous ride. Weight - 0.24 lbs / 110 grams
$368.00
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) - BB not included
$299.99
ELEMNT BOLT is purposefully built to provide a simple, intuitive ride experience in a sleek, aerodynamic design. This GPS bike computer features a 2.2 inch, 64 color screen with ambient light sensor to make it easy to see the metrics that matter most, at a glance. Perfect View Zoom, Quicklook LEDs and customizable data pages allow you to personalize your device setup to ensure it's a helpful companion from the beginning to the end of your ride. With 16GB of memory and on-device navigation features, ELEMNT BOLT can store the maps and routes you need to keep you on track and re-route on the fly. BOLT has a battery life of 15 hours and can be charged mid-ride thanks to its USB-C charging. Equipped with Bluetooth Smart, ANT+ and WiFi technology, ELEMNT BOLT pairs seamlessly with all of your cycling sensors and complimentary devices to get the most of your time training. Designed for performance and engineered for simplicity - the ELEMNT BOLT GPS Bike Computer makes every second count. The ELEMNT BOLT is a fully integrated GPS bike computer, with a full list of compatible hardware and smartphone apps. - Unique to Wahoo, the integrated out-front mount creates a cohesive system of the ELEMNT BOLT unit and mount for a sleek look and smooth riding. - The thin, lightweight, and damage-resistant Gorilla Glass helps ELEMNT BOLT can stand up to the toughest conditions. - Automatically adjusts screen brightness and LED lights as lighting conditions change both indoors and outdoors. - Vibrant, crystal clear 64-color 2.2" (55.88mm) display makes seeing your data and routes easier than ever. - A truly wireless bike computer with no plugin required (except to charge it)! There's no need to connect to your laptop to sync ride data, download maps, or update software. All of this can be done via WiFi, Bluetooth, or ANT+. - The free ELEMNT Companion App effortlessly guides you through a step-by-step set-up so that you can create customized user profiles, track performance, update maps and firmware, and share ride data effortlessly. - Integrated GPS with simple, crisp maps so you're ready wherever you are in the world. - Full support and integration with Specialized ANGi crash detection sensors What’s in the Box: -ELEMNT BOLT Unit -Integrated Out-front Mount -Stem Mount -Zip Ties -USB-C charging Cable -Quick Start Guide -Important Product Info Guide ELEMNT BOLT IS A STANDALONE BIKE COMPUTER A smartphone is necessary for setup and to have phone, email, and alert features. ELEMNT COMPANION APP SUPPORTED DEVICES IPHONE/IPAD iOS 11 or newer ANDROID Please visit our support site to check for Android compatibility. SPECIFICATIONS - Unit Dimensions 3.05" x 1.86" x .84" - Display Size 2.2 in / (55.9 mm) - Display Type 64 - Color - Display Resolution 320x240 - Weight 2.4oz (68.38 grams) - Battery Rechargable Lithium Ion - Battery Life 15 Hours - GPS Functionality Built-in - Supported Satellites GPS, GLONASS, BEIDOU Galileo, and QZSS - Water Rating IPX7 (Waterproof up to 5 ft) - Mount Types Integrated out front and Stem - Altimeter Yes - LED Lights 1 row customizable - Perfect View Zoom Buttons Yes - Ambient Light Sensor Yes - Operating Temperature -4°F to 122°F / -20°C to 50°C
$34.99
The Protege Series are great for training, touring, or keeping track of car-free miles. - Four-line, easy-to-read macromonitor LCD display provides up to five pieces of data at a glance - Heavy-duty, oversized wire harness and ultrasonically welded case ensure a durable, weatherproof unit - Mode changing is easy: push the computer forward in the spring loaded bracket- the computer is the button - Auto start/stop and LCD shut off - Fits 25.0-31.8mm handlebars - Weight: 57 grams with bracket and sensor - Case size: 40mm x 47mm - Height (w/ bracket): 27 mm
$54.99
The Protege 9.0 uses the Planet Bike 4-line MacroMonitor display and has digital wireless technology to eliminate messy wires. - Functions: Current Speed - Speed Comparator - Ride Time - Trip Distance - Dual Odometer (for 2 wheel sizes) - Average Speed - Maximum Speed - Clock - Temperature - Digital technology results in decreased interference - Easy-to-adjust sensor that fits bladed spokes up to 4 mm - 4-Line MacroMonitor LCD displays up to 5 pieces of data at a glance - Fits 25.0-31.8mm handlebars - 21" wireless range
$39.99 $44.99 11% Off
Keep an eye on your speed, distance and more with wireless ease when Bontrager's GOTime cycling computer is clipped to your bars. Set-up is a breeze; the large LCD screen is easy to read and the integrated clip mount allows you to instantly remove the computer and throw it in your pocket when you reach your destination.
$44.95
The Cateye Velo Wireless Computer packs a punch with a programmable odometer and menu screen. It installs easily on almost any bike, including 27.5 and 29’ers. - Computer functions: Current/ average/ maximum speed, trip distance, total distance, elapsed time, clock, calorie consumption - Analog wireless computer - Pace arrow - Simple tire size - Auto start / stop - Programmable odometer - Menu screen to change setting - Includes zip tie bracket
$54.95
The Padrone features a large bike computer display, making it easy to see in all conditions. - The Padrone features the following measurements: Current/ average/ maximum speed, total distance, trip distance, elapsed time, clock, and stopwatch - Its large display size makes it easy to read while riding - Easy to set up, read and use - ClickTec button interface for easy use - Analog wireless computer - Programmable odometer - Auto start/stop - Menu screen to change setting
$54.95
From the downhill mountain biker to the farsighted cyclists, the Padrone is ideal for anyone who wants to enjoy a squint-free ride and a fast, simple set-up. - Analog wireless - Large display and sleek design - Auto start/stop - Menu screen to change setting - ClickTec button interface - Programmable odometer - Battery indicator - FlexTight universal bracket
$36.99
Instant bike dashboard Enhance your riding experience while delta keeps your mobile phone safe. Whether cycling is a new hobby or you're an avid competitor, riding a mountain bike or a classic two-wheeler, this phone holder will provide full-screen visibility and hands-free access to ensure maximum safety for you AND your smartphone, while on the road! Features Mobile Phone Compatibility - Bicycle mobile phone mount compatible with phones up to 2.9 inch wide, .625 inch depth, 6 inch length (up to iPhone X and Samsung Galaxy 9 non plus + versions). Secure Mobile Phone Mounting - Weatherproof bungee and rubber inserts keep phone secure while delta’s patented cam lock provides added security for your mobile phone on rough terrain. Easily Accessible - Sliding system allows for easy in/out while on the go, stop for an important call, adjust navigation, and never worry about missing the perfect photo opportunity while riding. Multiple Mounting Options - Included handlebar and stem cap mounts allow you to position your mobile phone in your desired location. Securely mounts to handlebar diameters up to 1 3/8" / 35 mm. Quality Construction - Designed for road cycling, your mobile phone is fully enclosed and securely mounted in place with a built-in locking mechanism. Precision-engineered design grips your device, providing ease-of-mind on the roughest terrain. Weight - 0.14 lbs / 65 grams
$36.99
Instant bike dashboard Perfect for any enthusiast, Delta's bicycle phone mount allows you to securely display your mobile device while riding. Using a built-in lock mechanism, your plus-sized smartphone is secured safely with multiple grip points and bumpers, to prevent shock and reduce vibration on rough terrain. Adjust the angle of display for convenient viewing while riding to easily access navigation, answer that important call or stop for the perfect photo opportunity. Features Securely Displayed - Weatherproof bungee and rubber inserts keep phone secure and protected while Delta's patented cam lock provides added security for your mobile phone on rough terrain. Compatibility - Bicycle mobile phone mount compatible with phones 3.5 inch wide x 0.5 inch depth x 7.8 inch length (up to iPhone 8+ Plus and Samsung Galaxy 9+ plus). Easily Accessible - Sliding system allows for easy in and out while on the go, so your phone is available for an important call, adjusting navigation, and you'll never have to miss the perfect photo opportunity. Quality Construction - Designed for road cycling, your mobile phone is fully enclosed and securely mounted in place with a built-in locking mechanism. Precision-engineered design grips your device, providing ease-of-mind on the roughest terrain. Multiple Mounting Options - Included handlebar and stem cap mounts allow you to position your mobile phone in your desired location. Securely mounts to handlebar diameters up to 1 3/8" / 35 mm Weight - 0.17 lbs / 80 grams
$74.99
Connect ANT+ and Bluetooth Smart devices to all of the data available from the DuoTrap S sensor for your on-the-bike wireless needs. • ANT+ 2.4 GHz and Bluetooth Smart wireless digital speed and cadence sensor • ANT+ and Bluetooth Smart allow simultaneous use of Trip 300 and smartphone • For use with many ANT+ and Bluetooth Smart wireless technology enabled devices • Includes Bontrager wheel magnet, crank cadence band, and CR2032 battery • Works with Trek DuoTrap compatible bikes
$19.99
Convert your K-Edge Garmin Computer Mount to be a Computer + Action Camera combination mount. Works with any camera that utilizes the GoPro sytle interface, including GoPro Hero, Garmin VIRB, and Shimano CM-1000. - Camera Adapter mount with GoPro style interface - Fits K-EDGE Garmin Mounts (K13-500, K13-505, K13-560) - Locks GoPro, Shimano, VIRB style cameras underneath Garmin Computer. - Centers camera in out of site position - Improves video clarity by removing plastic mount shake - Colors: Anodized Black - Weight: 14grams *Note: Garmin VIRB requires the GoPro adapter that is included in the box with the VIRB.
$69.99
All you need for cycling data, all together at once! The Wahoo RPM Speed and Cadence sensors are both a sleek, wireless, and magnet-less solution. Each mounts easily to your bike and the Bluetooth Smart and ANT+ duel band technology allows you to connect and display data on both smartphone and bike computers. - Dimensions (LxWxH): 1.25" x.75" x 1" - Weight: 7 grams (without mount) - Battery: CR2032 - Battery Life: Up to 12 months - Water Rating: IPX7 (waterproof up to 5 ft) - Wireless Signal Strength: Up to 10 feet - Note: Speed Sensor is NOT compatible with spin bikes
$31.50
The SmartphoneHub transforms your bike into a fully networked eBike. The smartphone and COBI.Bike app turn the SmartphoneHub into an intelligent control center that can be used for navigation, recording activities, and connection to other. The eBike can also be ridden without a smartphone due to the integrated display in the SmartphoneHub, showing the most important riding data. - The SmartphoneHub and the COBI.Bike app connect the eBike to the digital world and allow for navigation, music streaming, fitness tracking, and integration of other services and apps such as Strava - A 1.52-inch display allowing for use without a smartphone - The COBI.Bike app gives eBikers a permanent overview of the most important training data. such as performance, cadence and calorie consumption - The COBI.Bike app allows access to music and audiobook streaming services, such as Spotify or Audible, which can be operated by remote control - The SmartphoneHub charges phones using the eBike battery - Walk assistance function helps you push your eBike at speeds of up to 6 mph
$49.99
Garmin's ANT+ USB stick plugs into your computer's USB port to wirelessly transmit your activities to Garmin Connect and Garmin's Training Center. It automatically receives your activity data when your compatible ANT+ Garmin device is within range.
$800.00
It looks like it’s from the future, but it’s here now. Our lightest, stiffest, and most accurate integrated power meter and chainring combo is now on Force. Quarq D-Zero technology is accurate to +/-1.5% and isn’t affected by temperature changes, and the consistent 13-tooth gap on the rings ensures fast and reliable shifting. Not just unbeatable on performance, our integrated rings are also incredibly long-lasting. And let’s not be modest: the combination of these rings on our iridescent carbon crank arm is the best looking thing out there. FEATURES - X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear - 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 - Measures right and left leg power balance - Unique chainring shape results in a lighter weight, stiffer, more durable crankset - DUB bottom bracket adds durability and simplicity
$155.00
With an extra battery on board, you have the flexibility to extend your ride. The FAZUA Battery Bag was developed in cooperation with the experts from evoc for carrying the FAZUA 250 and 250x battery. It attaches to the frame with a few simple straps. The three fixation points hold it tightly to the frame preventing sway and bouncing. - Carries all available batteries of the FAZUA Ride 50 Evation product family and additional gear - Hypalon reinforcement material protects the frame and internal padding protects the battery - Two straps with buckles and a 3rd with hook and loop fastener securely hold the back to the frame - Highly abrasion-resistant and water repellent material with roll closure keeps the battery secure - Welded seams and water-repellent tape construction Specifications: - Number of Compartments: 1 - Top Tube Length: 12.2-inches - Seat Tube Length: 3.2-inches - Width: 3.2-inches - Volume (In3): 79 - Volume (L): 1.3 - Total Volume: 80 - Primary Material: 10% Polyester/ 70% TPU/ 20% Nylon - Weight: 140 - Waterproof: No
$1,129.00
Every innovation in Quarq's DZero platform represented the 10+ years of Quarq's advances in power meter technology. This same platform is now combined with XX1 Eagle DUB CARBON TUNED crankset—lightest, stiffest, and strongest to date, and X-SYNC 2 chainring—providing significantly quieter performance with better mud clearing and extraordinary durability. Ready to power every ride. - Bluetooth low energy technology and ANT+ wireless data transfer - MagicZero: automatically checks and recalibrates your power meter as you ride (no need to manually calibrate) - AxCad: no cadence magnet required - 10K Temperature Compensation - Battery: CR2032, 200-hour battery life, change without tools - OmniCal: swap chainrings without affecting accuracy - 2-year warranty - IPX7 waterproof rating - Accuracy: within 1.5%, measuring both legs
$340.00
Power measurement is a crucial part of training, so we’ve made it as easy as possible to upgrade your Force AXS ride with Quarq technology. DUB-PWR takes the legendary reliability and accuracy of Quarq technology and inserts it into the crank 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. FEATURES - 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 AAA lithium 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)
$340.00
Power measurement is a crucial part of training, so we’ve made it as easy as possible to upgrade your Force AXS ride with Quarq technology. DUB-PWR takes the legendary reliability and accuracy of Quarq technology and inserts it into the crank 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. FEATURES - 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 AAA lithium 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)
$79.99
Shimano BT-R1A External Di2 Battery - All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions - Use Di2 system checker to update component firmware - Di2 External Battery, battery charger, and power cable are universal between Dura-Ace 9070, 7970, Ultegra 6870, 6770 and Alfine Di2 systems - Battery weight: 71 grams
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