Bicycle Computers USB Rechargeable Wireless Bike Cycling Cadence Computer This multifunctional wireless cycling computer features 2.4G wireless transmission with cadence. It has 21 functions that can track your riding distance, time, speed, Carbon offset, Calories consumption, Analogy speed indicator, speed comparison prompts, etc. It is really a useful cycling computer to meet your various needs. Features: 14 Functions: Wireless bicycle computer displays Speed, Time, Distance, Average speed, Maximum speed, Total riding time, Total riding distance, Current/Average/Max. cadence, Carbon offset, Calories consumption, 7 days data memory, Scan, Bike A/ Bike B selectable, temperature. 6 Extra Features: Analogy speed indicator, speed comparison prompts, stopwatch, 12h / 24h clock, metric/imperial unit, auto ON/OFF. Backlight: Large LCD display with LED backlight allows you to read all riding data easily and clearly. Easy to Operate: 2 smart buttons for easy operation. Convenient: Small size, lightweight and wireless design makes it more convenient. Battery Life: 12 hours working time when backlight keeps lighting; up to 150 hours standby time if backlight is off; super long standby up to 3 months. 21 Functions: Bike A / Bike B Current/Average/Max. cadence 12h / 24h clock Stopwatch Temperature Metric/imperial switchable Scan (RTM, DST, AVS, MXS, ODO) Analogy speed indicator Speed comparison prompts Current speed Average speed Maximum speed Trip time (Ride time) Trip distance CO2 (Carbon offset) Calories consumption Total riding time Total riding distance Trip memory and update trip data for 7 days Auto ON/OFF Backlight Specifications: Battery: 3.7V 120mAh battery Charging Time: 1-2 hours Dimension: 6.5 * 4 * 1.7cm / 2.5 * 1.6 * 0.7in Weight: 31g / 1.1oz Package Size: 15.5 * 8 * 4.5cm / 6.1 * 3.1 * 1.8in Package Weight: 117g / 4.1oz Package List: 1 * Bike Computer 1 * Sensor 10 * Zip Tie 1 * Rubber Ring 1 * Charging Cable 1 * Magnet 3 * Rubber Pad 1 * Bracket 1 * User Manual