This peephole viewer comes with a 4.3 inch large TFT color high resolution screen monitor to offer clear video, with lithium battery to power on or you just need to purchase 3 AA batteries to power it on. Easy installation with the attached screws and bracket, no wires are required. Especially convenient for children and elderly. An excellent door peehole camera monitor to ensure your home security. Featrues - 4.3 inch cat eye, high definition camera 160 degree wide viewing angle lens provide you clear video in a wide range. - The product is equipped with intelligent operating system with humanized multi-mode design - 200 million high-definition camera, and easy to install. - Conveient power supply. with lithium battery to power on or you just need to purchase 3 AA batteries to power it on. - With humanization function, when the storage is fulled, the system will cover the photos according times, do not need to sort out the containers. - Easy and clearly to use and recognize . Especially convenient for the children and the elderly. An excellent door peehole camera monitor to ensure your home security. Specification - Color: Black - Material: Metal - Screen: 4.3 TFT color screen - Viewing angle: 145 Degree - Technical support: - Camera pixel: 200 million - Indoor unit size: 148 x 87 x 20 mm - Door hole: 15-25mm - Door thickness: 35-110 mm - Power: 3 1.5V AA batteries(not included), Lithium Battery(included) Package list: 1 x Electric Door Viewer