Description: The product is made from sturdy and durable ABS material. It is easy to install and can be well hidden in the door. It has the advantages of highpixel camera, highdefinition display, wide viewing angle, easy operation, FIFO function and so on. This is a better solution for home safety and helps remove security risks. You don't have to open the door to get to know who is at the door. No longer open the door for a stranger! Specifications: Color: Black Material: ABS Indoor Viewer Size: Approx. 148 * 87 * 20 mm / 5.8 * 3.4 * 0.8 inch Battery: Lithium Battery LCD: 4.3" TFT Color LCD Viewing Angle: 145° Pixel: 1 MP Door Thickness Requirement: 35110mm Door Hole Size Requirement: 1525mm Power Voltage: 3.7V Package Weight: About 234g Package List: 1 * Indoor Viewer with Builtin Battery 1 * Peephole Camera 6 * Screws 1 * Hanging Plate 1 * USB Charging Cable 1 * User Manual NOTE:This product can only take photos, don't have the function of video and motion detection