Features: MOTION DETECTION: It can automatically record even though you left your car if it detects something moving within 3m. For this function, it needs to work with hardwire kit to get continuous power from car battery, at same time , free your car charger. Note: Please do not set the function ON when driving. EMERGENCY LOCK:(G-SENSOR)&LOOP RECORDING: When the built-in gravity sensor detects a collision, the current video is locked, ensuring important footage is kept protected. It will not overwritten even you open Loop Record function. Recorded video is split into 3, 5, or 10 minute segments. When memory card full, new recordings will automatically overwrite the oldest segments. EASY TO INSTALL & OEM design :The camera snaps on top of your existing rear view mirror.Perfectly matching the vehicle body just like any parts of your car; Suitable for most cars, even pick up truck. HIGH QUALITY IMAGES : The mirror dash cam provides full HD 1080P clear pictures with adjusted front camera lens in day and night, even raining days, thanks to the sensitive image processor. Easily get clear rear image with the help of 6 LED lights on IP 68 waterproof backup camera.