RYSJM | AD G21 HUD GPS Car Digital Speedometer Head-Up Display Big Font Compass Time Overspeed Alarm For All Car customized

Features:1. Plug & Play: After connecting to the power supply, car head up display can work directly without any other operations. No skip speed, more coherent and smooth display.2. Note: This device is a GPS digital speedometer, and the speed is collected from satellites. So if you test at home or a parking lot, perhaps the speed cannot be displayed correctly. Please conduct the test outside the vehicle with good signal.3. Widely Used: Built-in GPS + BEIDOU chip, car head up display is suitable for all cars, buses, trucks, bicycles, scooters.G21 GPS HUDFunction: Vehicle speed, time, number of satellites, compass, southeast, northwest, single driving distance, single driving time, total mileage, altitude, hundred kilometer acceleration test, ambient light unit for free switching between kilometers (KM) and miles (MPH), automatic light sensing functionAlarm function: overspeed alarm, fatigue driving reminderPackage Included:1 x Head Up Display