Description: There is no need to perforate and wire, just installing and using this product, with which there is no damage to your door. Products equipped with intelligent operating system with user-friendly multi-mode design is simple and easy to use for the elderly and children. Order it Features: 4.3inch HD TFT LCD display screen. 145 degree wide angle with large viewing. 1 million pixels professional security camera. Metal prying-resistant peephole viewer. 1800mAh lithium-ion battery, easy to use. Support USB or mobile power bank to power supply. Energy saving technology, automatic standby. One key to watch. Note: The function and structure is very simple, only with a wake-up-screen button, no charging instructions and no other functions. If the product can not power, please charge the it. Specifications: LCD: 4.3" TFT Color Screen Viewing Angle: 145 degrees Camera: 1 million pixels Suitable Door: Thickness of 35~110mm Suitable Peephole: Range of 14~50MM Battery: 1800mAh lithium-ion battery Size of Indoor Unit: 134 * 82 * 13.5mm / 5.28 * 3.23 * 0.53inch Color: Black Package Weight: 350g Package included: 1 x Outdoor Camera 1 x Indoor Host 1 x USB Cable 1 x Installation Package