Features: 2.4G wifi connection monitoring, remote conversation, no worry about going out. 120-degree wide-angle, 4.3inch screen, 1080P resolution, support motion detection and night viewing. Build-in 4pcs 850nm lights, without fear of no light environment, visible even at night. 800W high resolution camera, clear depiction, perfectly presenting the outside the door. Build-in 1000mAh large capacity battery, once full charge it can work for 4hrs, long standingby time. Specifications: Material: ABS Size: approx. 15x13.2cm/5.91x5.2inch Model: M15S Doorbell Camera Screen size: 4.3inches Power supply way: USB Type C charging Connection: 2.4GHz wifi connection View: 120° wide-angle Pixel: 800W Resolution: 1080P Battery: Build in 1000mAh battery Language: Supports 14 languages Ringtones: 6 songs Speaker: 8Ω 1W Memory card: Supports up to 256GB (excluding) LED ights: 4pcs 850nm lights Night viewing distance: 1m Industrial antennae: open transmission distance (150m), indoor (50m, crossing 1 obstacle) Working temperature: -10℃~60℃ Package Includes: 1 Piece Intelligent Doorbell note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.