The first picture is a product picture, the other pictures are sample displays WEST BIKING Waterproof Bicycle Computer With Backlight Wireless Wired Bicycle Computer Bike Speedometer Odometer Bike Stopwatch Malfunctions and Reasons 1. Q: The speed of ride is 0 all the time A: Incorrect location the installation of Magnet and Sensor 2. Q: The numbers display are incorrect A: Incorrect parameter ( such as the Perimeter of the bicycle wheel) 3. Q: Slow reaction A: Bicycle computer works under the temperature 0 degree 4. Q: Blank screen A: Don\'t let computer to be insolated under the sunshine, please keep it into the shade corner 5. Q: Dark display A: Battery is not connected well or the battery is down, please try to connect it well or replace it. 6. Q: No drawing on screen A: Take out the battery and 10 seconds later to put it back Type A - Wireless Version: Bike Computer, Sensor, Magnet Head, Ties & Stickers, Extension Bracket, Batteries *2, Binding, Box, Manual Type B - Wireless Version: Bike Computer, Sensor, Magnet Head, Ties & Stickers, Invisible Bracket, Batteries *2, Binding, Box, Manual Button version wireless computer The menu key of the computer is the button minus, not the touch button Wheel parameter table Instruction Manual