Features: High-Quality Material: Made of high-quality material, stable and practical, wear-resistant and reusable. Easy to install: This smart video doorbell has two installation methods, it can be glued or screwed, no screws required, and it also supports screws to be fixed on the wall, no need to connect cables, easy and safe. HD Video Doorbell: This smart video doorbell can provide HD clear video with wide angle to see your visitors easily and clearly. Wireless design: This smart video doorbell can be connected via Wifi without wires, enabling two-way intercom between the doorbell and mobile phone. It supports two-way calls, photos, and recordings. It care for your family and makes you safer. Nightvision function: Built-in light sensor, the smart video doorbell automatically turns on the nightvision function in the dark, making it safer at night. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: ABS Size: doorbell: 85*50*26mm Ringing machine: 60*44*26mm Battery Capacity: 800mAh Charge interface: Type-с Charge time: about 1.5 hours Standby time: >365days Package List: 1 x Smart Visual Doorbell Set 1 x Ringing Machine