Verify your USB car charger model before using YI Dash Camera. In some car models the USB car charger model provides power even after the engine is turned off and consumes the battery. If this applies to you, please turn off your camera manually after you switch off the engine. The YI Smart Dash Camera combines the top features of all the dash cameras on the market and provides protection to you and your car with ultimate performance and affordability. Designed with Advanced Driver Assistance System ADAS, the camera analyzes data such as speed and the distance from the car in front and gives voice warnings in case you move off-lane or get too close to another vehicle. YI Smart Dash Camera supports 1920x1080p full HD at 60fps, 2304x1296p ultra high-definition at 30 fps, bright, clear and sharp images even at high speed.