Loop recording: Seamless video, no leakageMemory: TF 4G max to 32G(not included TF Card)USB: USB-disk, PC cameraDC in: DC 5V,1Afrequency: 50HZ/60HZBattery:Built-in Lithium polymer batteryPhotographic mode: 500 pixelsMicrophone/speaker: supportImage format: JPEGNote: The built-in battery is only for save emergency files when parking off, the battery operating time is limited, please always connect dash cam to external power in daily use.Please Format The SD Card Before Inserting It To The Dash Camera And Before Turning On the camera.Please remember turn off the dash cam when you want to insert or pull the memory card out. If you insert or pull it with dash cam on, might cause loss of software, the dash cam will turn on and off automatically.After using for long time, it might produce fragment, and shows error, the solution is to take out the memory card and format it, then insert back into the cam again.Dual Camera Lens RecordingDouble lens combination can clearly record the driving situation of the front and rear of the vehicle.1080P Full HD ResolutionsHigh definition dash cam, without blind spots, and objectively judge the surrounding situation from a large perspective.Rear Camera Len RecordingThe rear view camera can help parking and avoid reversing accidents, keep your driving safety.Easy to installWith suction cup and bracket, can be tightly mounted on the windshield, installation is very simple and convenient.Welcome to my shopIf you have any questions, please contact us first, we will try our best to help you, if you have any questions about the product model contact us, we will help you solve the problem in the fastest way, your satisfaction is our pursuit, Happy shopping.wish you a happy life.