product description: The appearance of the door station is similar to the traditional optical cat's eye, and the hidden camera 4.3 inch TFT LCD screen, 480*272 1 million professional security cameras, 140-degree wide-angle Power supply: supporting 1800mAh rechargeable lithium battery The built-in 4M memory can store about 35 pictures, cyclic storage, and a maximum 32G memory card can be inserted Ultra-long standby Minimalist design, easy to operate, plug and play Support door thickness: 35-110MM Door hole diameter: 14-22MM packing list: 1: Indoor host *1 2: Outdoor handset*1 3: Lithium battery*1 4: USB charging cable*1 5: Metal hanging board*1 6: Screw bag*1 7: English operation guide *1 Product packaging size and weight: Color box size：192*119*38mm (including color box) total weight:340g