product description: Cat headband with Ding-dong, night vision and PIR motion detection Bronze Full Metal Cat Head 4.3 inch LCD screen 2 million high-definition pixels Support 4x digital zoom 160 degree viewing angle Support PIR human body sensor detection 2500mAh rechargeable lithium battery Support 4 kinds of ringtones, support 3-level volume adjustment 11 languages supported Can take pictures, support audio recording, can display date Maximum support 32G memory card Adapt to door hole: 15-38mm Adapt to door thickness: 30-110mm Indoor unit size: 135*75*11mm Outdoor unit size: diameter 63mm Packing weight: 0.35KG Packing size: 190*100*65mm packing list: 1: Indoor host *1 2: Outdoor handset*1 3: Metal hanging board*1 4: Screw bag*1 5: English operation guide *1 Product packaging size and weight: Color box size：190*100*65mm (including color box) total weight:350g