Bicycle Computers Wireless Bike Computer Speedometer Digital Bicycle Odometer Stopwatch Thermometer EL Backlight This wireless bike computer features a compact size and light weight, but it boasts many functions to keep track of your cycling data, which makes it a great machine for anyone who loves cycling. Features: Multi-Functions: Wireless bike computer keeps track of your cycling data effectively: Speedometer (SPD); Average Speed (AVS); Maximum Speed (MXS); Speed Tendency; Speed Comparator; Odometer (ODO) Odometer Save Function; Trip Distance (DST); Trip Timer (TM); Calories; Fat Burned. User-friendly: Kilometer (KM) & Mile (M) selectable; 12/24 hour selectable; & selectable; Maintenance program; Auto Scan; Freeze Frame Memory (TM and AVS). Auto Sleep & Wake-up: The bike computer automatically sleeps after no operation for 5 minutes, and automatically wakes up to track speed and distance when your bicycle moves again. EL Backlight: Large LCD display with backlight allows you to read all riding data easily and clearly. The clear cover can protect the screen from being scratched. Mini size and lightweight: Measures 55mm x 45mm x 20mm, and weighs only 34 grams. Computer and sensor run on CR2032 batteries. Functions: Speedometer (SPD) Average Speed (AVS) Maximum Speed (MXS) Speed Tendency Speed Comparator Kilometer (KM) & Mile (M) Selectable Odometer (ODO) Odometer Save Function Trip Distance (DST) Trip Timer (TM) Digital Clock: 12/24 hour selectable Auto Scan Auto Sleep & Wake-up Calories Fat Burned Freeze Frame Memory (TM and AVS) & selectable Maintenance Program EL Backlight Specifications: Material: ABS + Acrylic Dimension: 55 * 45 * 20mm / 2.2 * 1.8 * 0.8in Weight: 34g / 1.2oz Package Size: 156 * 73 * 47mm / 6.1 * 2.9 * 1.8in Package Weight: 97g / 3.4oz Package List: 1 * Bike Computer 1 * Transmitter 1 * Bracket 1 * Magnet 4 * Zip Tie