SHAKLZOP Head-up Display

-Description: 1. Item Type: Head-up Display 2. Material: ABS+PC 3. Size: 77.4*31.7*52.8mm/3.04*1.24*2.07in 4.Speed Unit: KM/H, MPH (the speed unit can't be adjusted) 5. Power Supply: Car USB Port(Input Voltage: 5V). 6.Feature: GPS Speed, Automatic Brightness, Simple and Small Design, USB Cable to Play. -Feature: 1. Automatic Brightness: The brightness will adjust automatically according to the environment light; 2. LED Screen,Large Font: you can see the speed data clearly; 3. to Play: the cable into your car USB port, turn on your car, the device will turn on; unplug the cable, it device will turn off. How to Install (First Use) 1. Noted: Before installation, drive your car in an outside place, not in garage or indoors, and then open you car window; 2. our USB cable to your car's USB port and the other end to your device; Stick it on the dashboard; 3. Turn on your car, it will take about 1-3 minutes to search for the signal; 4. When "0" appears, it is successful to install; driving your car on the road, the speed data will display; 5. Unplug the cable, the device will turn off. ========== Size Name : 77.4*31.7*52.8mm/3.04*1.24*2.07in Wire or Wireless : Wired Power Supply : Car USB Port Input Voltage : DC 5V Function : GPS Speed, Automatic Brightness, to Play Light Color : Green/White/Multicolor (Optional) Speed Unit : KM/H(Kilometer per hour), MPH(Mile per hour, Only for US/UK) Please Noted : The speed unit can't be adjusted.