Features: 1.4.5 inch high-definition IPS screen with 960*540 resolution for clear and delicate images. 2.All-metal zinc alloy material door viewer, anti-theft, pickproof and anti-peep. 3.2MP professional security camera, 170 ultra wide viewing angle. 4.Super night vision function, allows to monitor conditions outside the door during the day and night. 5.With doorbell function and doorbell no disturbing function. The video doorbell is installed on the door viewer hole. Specification: Features: 4.5 inch high-definition IPS screen with 960*540 resolution for clear and delicate images. All-metal zinc alloy material door viewer, anti-theft, pickproof and anti-peep. 2MP professional security camera, 170 ultra wide viewing angle. Super night vision function, allows to monitor conditions outside the door during the day and night. With doorbell function and doorbell no disturbing function. The video doorbell is installed on the door viewer hole. Support surveillance, shooting photo and video with sound recording function. Support maximum 32G TF card, insert memory card to record conditions outside the door. Smart adaptation system: at home mode, out of home mode and no disturbing mode are optional. A variety of music ringtones are available, and the ringtone volume can be adjusted. Power supply mode: support to be powered by 1800mah rechargeable lithium battery, USB and mobile power supply. Specification: Condition: 100% Brand New Material: ABS Color: As Picture Shown Battery capacity: 1800mAh IR night vision: Support Photo: Support Video: Support PIR mobile detection: Support Storage: Max support 32G (without memory card) Screen: 4.5" Suitable door hole: 15-35mm Suitable door thickness: 35-110mm Door viewer column size: Diamteter 15mm, length 30mm Door viewer size: Approx.60 * 60 * 15mm/2.4 * 2.4 * 0.6in Display size: Approx.135 * 80 * 13mm/5.3 * 3.1 * 0.5in Package Weight: Approx. 388g/13.7oz Package List: 1 * Indoor Doorbell 1 * Outdoor Door Viewer 1 * USB Cable 1 * Battery 1 * Installation Kit 1 * User Manual Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.