Wireless Bike Computer, Bicycle Speedometer with 2.8 Inch LCD, White Backlight, IPX6 Water Resistant Odometer Cycling AccessoriesLARGE & EASY TO READ 2. 8 Inch LCD display and the numbers are big enough to read. Large screen with white backlit LCD provides high visible during the day and night MULTIFUNCTION Cycle Odometer has all the basic functions, memory function, automatic wake up, 2 users data recording, SPD, AVS, MXS, ODO, DST, clock, temperature, etc AUTOMATIC WAKEUP Cycling computer Built in steel ball switch to achieve automatic wake up function, so when you shake the