Functions and Features: 1. Available for any car, easy to install, plug and play. 2. Screen 3.5 inch HD display. 3. Multi-color design makes the screen more abundant and easier to read. 4. Nanotechnology eliminating double reflections, more transparent. 5. Rich content: speed, compass, speed alarm, free switch between kilometers. 6.Automatic turn on/off: start and stop HUD with vehicle on and off, effective protection of car battery; Maintain manual switch mode, easier to control HUD. 7. Automatic and manual brightness adjustment, glare-free driving. Technical data: Working voltage: DC8-18V Working current: 40mA Sleeping current: 15mA Compass accuracy: 1 deg; Speed range: 0-400KM Screen size: 90x54x12mm HUD weight: 40g Displays driving data on the windshield, such as speed on the car's front window; Avoiding drivers' danger due to viewing the instrument while driving. Drivers can instantly read about their driving and can always maintain their best condition on the road with HUD. Package Included: 1x GPS HUD Speedometer 1x Anti-Slip Mat 1x Cig/Lighter 1x Reflecting Stickers 1x User Manual Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.