Features: 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.Infrared Night Vision: Using high power infrared fill light, even in the dark, the face of visitors are still clearly visible, ensuring home safety. 3.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. 4.3.5in Screen: The display uses a 3.5in high definition display, the door viewer is made of high quality zinc alloy, and the anti theft design is very convenient and practical. 5.Rechargeable Battery: The display is powered by a rechargeable high capacity built in battery, easy to charge. Enjoy ultra low power consumption through smart standby mode. 6.Doorbell Camera: Using the doorbell camera to view with one key to protect privacy. When the doorbell rings, the digital door viewer will ring and take a photo and store it, you can view it later. Specification: Item Type: Door Digital Viewer Material: ABS+Zinc Alloy Battery: 3.7V rechargeable lithium battery 3800mah (built in) Screen: 3.5in Camera Pixel: 200W Picture and Video Specifications: 720P, 1080P PIR Motion Detection: Support Suitable for Door Hole Diameter: Approx. 16-40mm/0.63-1.57in Suitable for Door Thickness: Approx. 35-105mm/1.38-4.13in Infrared Night Vision: 2 Infrared Lights, Support Night Vision USB Charging: 5V Storage: Support 16-32G Memory card (not included) Languages: Chinese, English, Japanese, Korean, French, Italian, Russian, Italian, German, Arabic, Turkish PackageList: 1 x DoorDigitalViewer 1 x Display 6 x Screw 1 x Fixed Plate 1 x USB Cable 1 x Manual