1. Recording function: During the recording process, you can press the camera button to capture photos without affecting normal recording. 2. Key video marking: Mark key videos to prevent deletion and facilitate video classification. 3. Wireless transmission function: This machine supports WIFI transmission function. You can control the prototype through a handheld device to take photos, record, mark key files, etc. The video image can be transmitted to the client software through WIFI. 4. Time correction function: The law enforcement recorder can calibrate the time through the PC (to meet the requirements of the Ministry of Public Security) 5. Abnormal alarm function: The recorder has battery undervoltage and storage overflow alarm functions. After the battery undervoltage alarm, the remaining battery capacity can ensure that the recorder can record normally for no less than 5 minutes, but no more than 30 minutes. 6. Data integrity: The recorder protects the stored data, and the stored data will not be deleted or overwritten by the machine or unauthorized host computer. The recorder can restart when an abnormal problem occurs, and the saved data will not be lost or damaged after restarting 7. High protection level, the device is more robust, with IP68 protection level 8. Built-in battery 4200mAh, super long battery life