Universal Head Up Display Auto Display Car GPS HUD Speedometer Security Alarm Smart Car HUD Gauge Digital Odometer For All Car Features: Compatibility: USB powered, suitable for all models. 2 Major Alarm Functions: Overspeed alarm can be set, continuous driving for 8 hours fatigue driving reminder. Display Function: GPS speed, Satellite time, Compass. Install: Compact body suitable for placement. No matter where it is placed, it is clear and natural, and does not block any sight. Automatic Photosensitive Adjustment: Built-in light sensing system, which can automatically adjust the screen brightness according to the light brightness of the current environment, bringing a comfortable visual experience. Accessories: 1*G4s-HUD, 1*Micro USB cable, 1*Non-slip mat, 1*Rotary suction cup holder, 1*User manual. Specifications: Special reminder: The working voltage of this product is 5V, and the voltage higher than 5V is prohibited. After the satellite icon is powered on, it flashes to indicate the search star. Please move the car to the open road until the satellite icon stops flashing. Applicable cars: Universal Type: GPS Speedometer Display color: White Screen Type: LED Screen size: 2.2Inch Material: ABS+PC Colour: Black Item size: Approx.52*52*14mm/2.03*2.03*0.55in Item weight: Approx.50g/1.76oz Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 10-30mm.