Instructions for use:Function1: Machine function switch: in the off state, press and hold [power key] and hold for 3 seconds to turn on the machine power, the blue light is always on, and the machine automatically starts to work . In the power-on state, press and hold the [POWER Key] and hold it for 3 seconds. The machine automatically saves video files and user settings and shuts down.Before using this product, you need to download the application (DVRunning2) from the mobile application store and install it.Function 2: video time-lapse button: in boot mode, short press this button to enter the time-lapse recording state, and the red light flashes.Before using this product, you need to download the application (DVRunning2) from the mobile application store and install it.Install the machine in the car first, connect the power supply and TF card, start the car, and make the machine enter the boot recording state. Click the mobile phone APP to enter the operation interface as follows. Click to connect to the device, enter the WiFi connection status and select the WiFi that matches the device to connect, the initial password of the WiFi device is: 12345678.After the connection is successful, click back to enter automatically in the application interface. To see the video playback, click on the point marked in the figure.Product specifications:Screen size: no screen/mobile APP connection>Voltage/Current: 12V/1A> Video resolution: 720P (HD1280x720), 1080P (1920X1080)Camera resolution: VGA (640x480) 1M (1280x720) 2M (1920x1080) 5M (2592x191956) 8M (3456x2448)> Continuous loop recording: support> Automatic startup/shutdown: Support startup, automatic shutdown and shutdown.> Time synchronization: support> Support memory card: TF (maximum support 64GB) (not including memory card)> Built-in stereo: support> Frequency: 50HZ / 60HZIntegrated image sensor: 200WFront camera resolution: 1080PLens angle of view: 170 degreesTF memory card slot: micro-tfVideo format: AVIPicture format: JPEGStorage temperature: -3070Working temperature: 050Working humidity: 15-65% RHLens: glass + high-resolution multi-layer filter wide-angle lensBuilt-in speaker: 8R0.5WBuilt-in recording: high-fidelity speakers