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. 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 1 x Door Digital Viewer 1 x Display 6 x Screw 1 x Fixed Plate 1 x USB Cable 1 x User Manual