H400G Car 3.5 inch GPS Mode HUD Head-up Display Support Speed / Time / Distance Display, H400G Battery & Resistance Tester Precision propeller

Precision propeller

check machine code more secure

output without sound amplify function

4GHz band)

H400G Car 3.5 inch GPS Mode HUD Head-up Display Support Speed / Time / Distance Display, H400G Battery & Resistance Tester Precision propeller1. Using 10 Hz high refresh rate GPS + Beidou dual mode chip, the refresh rate is 10 frames per second. The vehicle speed refreshes quickly without delay. 2. Using car USB (5V) or cigarette lighter to USB power supply, truly zero power consumption. USB or cigarette lighter is a short power, the car is turned off and the power is cut off, there is no the phenomenon of power stealing, and OBD is a long power. 3. Add the speed calibration function, which