product description: The appearance of the door station is similar to the traditional optical cat's eye, and the hidden camera 3.0 inch TFT LCD screen, 640*480 1 million professional security HD camera, 120 degree wide angle Power supply: built-in 1200mAh rechargeable lithium battery Infrared night vision, Ding-dong doorbell, camera function The built-in 8M memory can store about 90 pictures, cyclic storage, no need to insert a card Ultra-long standby Minimalist design, easy to operate, plug and play Support door thickness: 35-110MM Door hole diameter: 14-35MM packing list: 1: Indoor host *1 2: Outdoor handset*1 3: Metal hanging board*1 4: USB charging cable*1 5: Screw bag*1 6: English operation guide*1 Product packaging size and weight: Color box size：17.5*11.5*7cm (including color box) total weight：300g