LCD DISPLAY - High resolution, backlit display is easy to read even in bright sunlight or darkness, allowing you to get the latest sports data anytime, anywhere. AUTO SLEEP & WAKE UP - If the speedometer does not receive any speed signal during, it will automatically enter sleep state to save power. Just press any button or there is motion signal input to wake you up HIGH PRECISION DATA - High precision analog coded radios give you speed, distance, time and more reliable data on every trip. Provide you with professional bike analysis. WATERPROOF DESIGN: The wireless bicycle speedometer adopts closed waterproof design and more reliable protection performance, so that your bicycle speedometer can enjoy the outdoors without fear of dust, wind and rain. Multi-Function: Clock, Average Speed, Stopwatch, Trip Time, Total Distance, LED Backlight, Metric/Imperial Alternation, Driving Speed, Max Speed, Driving Distance and Auto On/Off. which can greatly meet your daily riding needs. Note: The data is manual measurement, please allow 1-5cm error, due to differences between light and weather. screen, there will be a certain color difference, the specific received in kind prevail.