ADAS FunctionWhen the device detects the vehicle in front to close, it will alarm to remind motorists to pay attention to road conditions or abnormal vehicle.LDWS FunctionThe device driver unconscious deviate from the original lane when the lane departure alarm is automatically triggered.Easy to install:Use USB cable connection car Android Multimedia player,simple and convenient (Android 4.0 or above, need to install APP)Basic Function Loop recordingNew recordings will automatically overwrite oldest recordings when the memory card is full, yet locked videos will be safe from being overwritten. ADAS Plus Make Driving Safer Advanced Driving Alarm Systems (LDWS/ FCWS) , it is useful alarm systems to keep your driving safer.>>Lane Departure Warning System (LDWS)Drowsy or distracted driving greatly increases the chance of an accident on the road. The LDWS will alert the driver with English voice when the vehicle goes off lane in a speed over 50 km/h.>> Forward Collision Warning System (FCWS)Accidents can be avoided by maintaining a safe following distance. Road Safety Warning System in the calculates the real-time distance between your vehicle and the vehicle in front of you, while driving above 30 km/h in expressways or under 30 km/h in a busy city, and issues a 3-level early warning with English voice to the driver depending on the danger of collision.Floating window function: In the case of a floating display, other applications can be used