Warning:This product working voltage is 5V, and it is forbidden to use a voltage higher than 5V for power supply. Display functions:1. Multi-function display: clock, driving time, travel distance, satellite numbers, acceleration time, longitude, latitude,Dial left or right to switch. 2. Function icons: fatigue driving, driving time, clock, acceleration time, direction angle, longitude, latitude, driving distance, altitude. 3. Speed progress bar. 4. Speed display. 5. Speeding alarm icon. 6.Vehicle speed unit (MPH=mile ,Km/h=kilometer), compass, satellite number icon. 7.The compass can be used normally after the satellite is searched,(N=North, E=East, W=West, S=South). 8. The GPS satellite icon stops flashing before it can be used normally. 9. Satellite numbers. Wave button function:1. Short press in: confirm the option after entering the setting menu. 2. long press in: enter the setting, after adjusting, press vertically for 2 seconds to save and exit. 3. Push left:: switch clock, driving time, acceleration time (move option after entering setting). 4. Long push left: push left for 2 seconds to turn off the buzzer alarm, do it again to turn on. 5. Push right: switch driving distance, altitude, longitude, latitude (move option after entering the setting).Product list1 * G10-Host 1 * Micro USB 1 * Non-slip mat 1 * Rotary Suction Cup Holder 1 * Manual