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 ViewerMaterial: ABS, Zinc AlloyModel: NoneBattery: 3.7V Rechargeable Lithium Battery 2500mah (Built in Battery)Screen: 4.3inCamera Pixels: 200WPicture and Video Specifications: 720p, 1080pPIR Motion Detection: SupportSuitable for Door Hole Diameter: Approx. 16 to 40mm / 0.6 to 1.6inSuitable for Door Thickness: Approx. 35 to 105mm / 1.4 to 4.1inInfrared Night Vision: 2 Infrared Lights, Support Night VisionUsb Charging: 5VStorage: 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 Viewer1 x Display6 x Screw1 x Fixed Plate1 x USB Cable1 x User Manual