Fashion design: elegant classic design, simple functionality, suitable for most people's aesthetics Megapixels: with the help of a professional security camera, you can better restore image details, so as to provide you with an excellent visual experience 120 wide-angle lens: equipped with a 120 wide-angle lens, there are clear details in front of the door to reduce security risks Zinc alloy exterior extension: the zinc alloy material has a anti-vandal function, which can prevent human injury to the greatest extent Invisible camera: use an invisible camera that looks like a traditional cat's eye and can be viewed with one click without storage to protect privacy By purchasing this door peephole, you can enjoy without disturbing the mode immediately. Born to be a landmark, built to guide the line. The doorbell is made of zinc alloy which prevent it from prying or theft. Care for your family, hand strengthen the security system, start from today, for a better life. Equipped with 120 wide angle lens, clear view in the details in front of the door to reduce security risks. Screen: 3.5" LCD, 480*320. Camera: 1MP. camera shell: zinc alloy. Door hole diameter: 14-35mm. door thickness: 35-100MM. Power supply: AAA battery x 4 (not included)