Feature:1. 4.3in LCD Screen: 4.3 inch digital large LCD screen, high definition LCD display with 1MP, let you clearly see everything outside the door.2. Motion Detection and Video Recording: Door viewer can sense visitors outside the door, and automatically start recording if there are moving objects outside the door, supports up to 32G memory card (not included).3. 120 Wide Angle: This digital door viewer has wide angle lens, horizontal 120, diagonal 170, provides you with a large field of view to ensure home safety.4. Video Doorbell System: 2 in 1 design, doorbell and door viewer , there are a variety of ringtones to choose from, the volume can also be adjusted freely.5. Rechargeable: Built in large capacity lithium battery, cycle charging is more environmentally friendly. Suitable for all kinds of places, such as homes, apartments, office, etc.Specification:Item Type: Digital Door ViewerMaterial: ABS, Zinc AlloyUsage: Suitable for all kinds of places, such as homes, apartments, office buildings, hotels and other places, iron doors, wooden doors, anti theft doors, glass wooden doors, etc.LCD Display Size: 4.3inImage Sensor: 1MPImaging Angle: Horizontal 120, Diagonal 170Recording Mode: Photo or VideoMotion Detection: Support the sensing distance of 1-3 meters / 3.28-9.84ft, the sensing distance is related to the ambient temperatureStorage Method: Memory Card (1-32G) (not included)Infrared Night Vision: 2pcs 850nm Infrared LightPower Supply Mode: 3000mAh Lithium Battery x 1 (Built in) or DC5VMenu Language: Chinese or EnglishRingtones: 12 Polyphonic MusicSuitable for Door Thickness: Approx. 35-120cm/13.78-47.24inWorking Ambient Temperature: -20-55.Package List:1 xDigital Door Viewer1 x Screen4 x Screw1 x USB Cable1 x ManualNote:Do not place the product in excessively humid and high temperature environments