Features: 1. 2.4 Inch LCD Display Screen & 90 Viewing Angle: You can see the outside scene clearly 2.4 inch high definition LCD display screen, 90 wide viewing angle allow you to see more. 2. Infrared Night Vision: With 2 pcs IR-LED, even in dark environment can look clear from the outside to make you feel safe. 3. Automatic Photography: Press the "doorbell" button, the device will turn on and take photos. You can also take photos inside the house when you see someone special outside the door. 4. 6 Months Standby Time: Ultra-low power consumption. Built-in 650mAh battery and easy to charge via USB. With low power consumption and long standby time. Charges only for 3-5 hours, can work for 6 months. 5.After-sale Service: If you have any questions, please contact us immediately and we will help you solve it as soon as possible. Specifications: Display: 2.4-inch TFT LCD display Features: Infrared night vision, ding-dong doorbell, photo function Self memory, circular storage, no need to insert card Professional security HD camera 90 degree wide angle Battery:650mAh(Not include) Door Thickness:35-110MM Door Hole Diameter:14-30MM includes: 1 * Indoor Mainframe 1 * Outdoor Subcomputer 1 * USB Charging Cable 1 * Metal Wall Plate 1 * Screw Kit 1 * English Operation Guide