Auto Wake-up Function: After 300 Seconds Of No Signal Input, The Device Enters Sleep Mode And Automatically Wakes Upon Sensing Vibration.<br> Multi-functions: Measures Speed, Distance, Riding Time And More, Ideal For Serious Cyclists Or Fitness Enthusiasts.<br> Day & Night Backlight: Ensures Easy Viewing In Dark Hours With Automatic Activation When Any Button Is Pressed Between 18:00 And 06:00.<br> Easy To Install & Use: Simple Installation Process And User-friendly Interface With Two Buttons To Access All Measurements.<br> Compatibility: Works Great On Road Bicycles, Mountain Bikes, Folding Bikes, And Other Common Types.<br> Experience The Ultimate Cycling Companion With Our Wireless, Waterproof Speedometer Designed For All Conditions. Stay Informed With Multi-functional Metrics While Enjoying The Ease Of An Automatic Wake-up Feature And Customizable To Your Bike's Specifications.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store