Feature: 1. Automatical Storage: Support visitor's audio recording to automatically take pictures and automatically store, when peephole viewer records the visitor's portrait, it will store and support visitor's video message. 2. Real Time Viewing: Elderly people and young children of any height can see what's happening at the front door without the need for the Internet or smartphone. 3. Infrared Night Vision: Using high power infrared fill light, even in the dark, the face of visitors are still clearly visible. 4. 4.3in Screen: The display uses a 4.3in high definition display, the door viewer is made of high quality zinc alloy, and the anti theft design is very convenient and practical. 5. Doorbell Camera: Using the doorbell camera to view with one key. When the doorbell rings, the digital door viewer rings and takes a photo and stores it, you can view it later. Specification: Item Type: Door Digital Viewer Material: ABS, Zinc Alloy Model: None Battery: 3.7V Rechargeable Lithium Battery 2500mah (Built in Battery) Screen: 4.3in Camera Pixels: 200W Picture and Video Specifications: 720p, 1080p PIR Motion Detection: Support Suitable for Door Hole Diameter: Approx. 16 to 40mm / 0.6 to 1.6in Suitable for Door Thickness: Approx. 35 to 105mm / 1.4 to 4.1in Infrared Night Vision: 2 Infrared Lights, Support Night Vision Usb Charging: 5V Storage: Support 16-32G Storage Card (Not Included) Languages: Chinese, English, Japanese, Korean, French, Italian, Russian, Italian, German, Arabic, Turkish Package List: 1 x Door Digital Viewer 1 x Display 6 x Screw 1 x Fixed Plate 1 x USB Cable 1 x User Manual How to use: 1. Please charge for a while before use 2. The door digital viewer is connected to the display through the cable, and the screen lights up when you press the power button 3. You can read the manual for function test and function setting