Bicycle Computers features: West biking waterproof bike speedometer wired wireless bicycle handlebar computer bike accessories cycling code table with light(White Wireless) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Colour: White wireless Description: Daily Waterproof：Do not put the product into water or get wet in the rain for a long time. Cover a plastic warp when there is a bad weather. SMARTMICROCIRCUIT, STABLE FUNCTION：Automatic memory,more stable function more correct data; longer service life. Distance Between Magnet and Sensor Auto ON/OFF Riding distance Max speed Riding speed Metric/imperial alternative Stopwatch Total Distance/ODO Riding time Average speed Scan Specifications: Size:6.0*4.4*1.5CM/1.73*0.24*0.59inch Specification:Screen size 2.1inch Application: MTB Road Bike Battery: CR2302 button battery Waterproof:Daily waterproof Feature: Backlight, Multifunctional, Easy to use Package Included: 1.bike computer 2. wired launcher 3.rubber loop 4.shake-absorbing sponge pad 5.shake-absorbing sponge 6. strong magnet 7.nylon belts*7 8.English version instruction or 1.bike computer 2.wired launcher 3.rubber loop 4.shake-absorbing sponge pad 5.shake-absorbing sponge 6.strong magnet 7.nylon belts*7 8.English version instruction