1. Easy installation: Applied to all Car. 2. Speed Unit:MPH . 3. High display resolution. 4. Highly waterproof IP67 and High-temperature resistant. 5. 5 different display interfaces are available. Product s: C20 On-board multifunction display terminal ,also known as Car trip computer, is a multifunctional, comprehensive,customer-oriented car information display terminal. With the car trip computer system, the users not only can know most of the car information, but also and setup the inner functions of their cars to more personalized and humanized. Product Parameters: Power Supply: DC 10V ~ 30V Pitch Angle: -40degree ~ +40degree Time Error: less than 1minute Voltage Precision: 0.5V GPS Cold Start Duration: 32s( Average) GPS Update Rate: 1S Working Temperature: -40 +80 Roll Angle: -40degree~ +40degree Voltage Range: DC 10V ~ 30V Speed Precision: less than 0.36Km/h GPS Hot Start Duration: 1s(Average) Wireless Transmission Frequency: 2.4GHz colour: black Material: ABS Package Contents: 1 x -up display 1 x Bracket 1 x ACC power cable 1set x Accessrioes 1 x Lighter Cable Only the above package content, other products are not included. Note: Light 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 +/- 1-3cm.