Feature: 1. Apply to all cars in the world. Plug and Play. 2. 5.5 screen and high-definition display3. Multi-color design makes the screen more abundant and easier to read4. The use of nano-technology to eliminate unwanted reflections and can make display information more sharper. 5. Display rich content: speed,driving direction,driving time, driving distance,real time, satellite number, altitude,speed alarm,free switching between kilometer and mile 6. Auto power on and off with vehicle started and shutdown, effective protection of the car battery; while retaining the manual switch mode, and more easy to control HUD. 7. Automatic and manual brightness adjustment mode, driving without glare. Specifications: working voltage: DC8-18-24VWorking current: 40mAsleeping current: 15mACompass precision: -1 degreeSpeed range: 0-400KMReal time precision: The same as satelliteHUD size: 13cm*7.8cm*1. 5m12V car charger: 1000mAUSB cable: 1m Weight: 200gDimension:230*75*14mm