Description: Display screen: 4.5-inch high-definition display screen, cat's eye anti prying design. Features: 2 million professional security cameras, 160 degree for ultra wide angle. Function: With super for night for for vision function, doorbell interference free function. Other: PIR for motion detection, human body sensing, photo taking, audio and video recording, video message function, maximum support for 32G memory card. Power supply: 2500 MAH large capacity battery is used for power supply. Language: Multiple music ringtones can be selected, with adjustable ringtone size, and support for multiple languages. Specification: Material: ABS+aluminum alloy Color: Black, gold, silver. Size: Approx.13.5x7.6x1.5cm/5.31x2.99x0.19 inch. Maximum support: 32G card storage Support door thickness: 35-105MM Door hole range: 15-40MM Display screen: 4.5-inch high-definition display screen Visible range: 160 degrees wide angle Pixel: 2 million professional security cameras Power supply: 2500MAH large capacity battery Note: Material: ABS+aluminum alloy Package Includes: 1 Piece Indoor Host. 1 Piece Outdoor Slave. 1 Piece Battery. 1 Piece Type-c Charging Cable. 1 Piece Metal Hanging Plate. 1 Piece Screw Pack. 1 Piece English for Operation Guide.