1. Push up to start recording, push down to save with one click, 1080P high-definition recording. 2. [Lens can be calibrated] The screen image can be viewed in real-time, and the lens placement can be calibrated on the screen to avoid missing images. After calibration, the display screen can be manually turned off with one button. 3. [Long Range] It can record continuously for about 4 hours when fully charged, and standby for about 20 days when fully charged without use. The remaining battery can be viewed in real-time on the screen, and the battery usage can be monitored at all times. 4. [No light night vision] When the lens is turned on for infrared night vision without bright lights, it is difficult to detect without light. (Infrared night vision without auxiliary lights, black and white screen) 5. [External Memory Card] The product does not come with memory and requires the insertion of a memory card for use. It supports up to 256GB of memory cards.