Feature: 1. HiFi Microphone: This video doorbell adopts two way talk design, with high power speakers and high sensitivity microphone, the door visual call is clear and stable, support the adjustment of the volume, do not disturb family members. 2. Wide Angle Lens: Video doorbell with 125° wide angle lens to make the door in front of the situation as clear as possible, so that no security dead ends in front of house, multiple visitors can also be seen one by one. 3. Night Vision Function: Built in high power infrared night vision light, combined with ICR infrared filter, can automatically switch day, night mode. Even in the dark environment, you can see clearly and camera can shoot clearly. 4. Built In Battery: The camera doorbell is equipped with 1000mAh large capacity rechargeable battery, even if the home suddenly power outage, low power doorbell an still continue to work for a period of time, and continue to guard your home security. 5. Wireless Connection: This camera doorbell supports 2.4G Wireless Fidelity, no need for complex wiring, support APP real time viewing and playback, can use up to 64GB Memory Card to expand memory. Specification: Item Type: Video Doorbell Material: ABS Lens Pixels: 8MP Lens Angle: 125° Night Vision Distance: Approx. 5-10m / 16.4-32.8ft Sound Pickup Distance: Approx. 5m / 16.4ft Doorbell Battery: Lithium Ion Battery 1000mAh (Built in) Storage Card: Memory Card, Maximum Support 64GB (Not Included) Charging Interface Type: Type C Wireless Fidelity Version: 2.4Ghz Waterproof Level: IP65 APP: Support. Package List: 1 x Video Doorbell1 x Doorbell Backplate (Pre Installed)1 x Adhesive Tape 1 x Charging Cable 2 x Expansion Plugs 2 x Screws 1 x Small Screw 1 x User Manual Note: Only support 2.4G Wireless Fidelity, do not support 5G or Wireless Fidelity with special characters.