Feature 1 Safety Alarm: Car HUD speedometer has speed alarm and fatigue driving alarm, reminding you in time, which can ensure your safety in long distance driving. 2 Key Information Display: Car HUD can display speed, display MPH or KM/h, travel time and distance calculation and display, let you know the key information of your trip. 3 Green Light Display: The green light display will protect the driver's eyes and make the driver feel more comfortable, especially for long distance driving. 4 Plug and Play: This HUD calculates and displays real time speed via GPS. No professional installation, no wiring VSS (vehicle speed signal), compatible with all cars and trucks. 5 Anti Slip Bracket: With a rotatable bracket and 2pcs sturdy stickers, the HUD can be fixed on the car console or windshield to prevent the HUD from slipping.Item Type: GPS HUDMaterial: ABS+PCColour: BlackFunction Display: GPS Satellite Speed, Single Driving Mileage, Single Driving Time2 Major Alarms: Speeding Alarm, Fatigue Driving AlarmOther Functions: Mile Kilometer SwitchPower Supply Mode: USB Power SupplyScope of Application: Suitable for all models Package List1 x Car HUD1 x Bracket1 x Data Line2 x Sticker1 x Manual