Feature:1. High Fidelity Microphone: This smart doorbell adopts 2 way voice design, with high power speakers and high sensitivity microphone, making the visual call clear and stable in front of the door, and supporting the adjustment of the volume, not disturbing the family!2. Wide Angle Lens: This smart doorbell adopts a new generation of large wide angle lens, you can see the situation in front of the door, so that there is no security dead ends in front of the home, and multiple visitors can be seen one by one.3. HD Camera: This smart doorbell uses a HD camera that can record 1080P HD video, which clearly records every picture with rich details, allowing you to see the facial details of the visitors in full.4. Infrared Night Vision: This smart doorbell has a built in high power infrared night vision light, combined with ICR infrared filter, and can automatically change between day and night mode.5. Remote Video Call: This smart doorbell can be used to make remote call through APP and cell phone network. After the visitor presses the electronic doorbell, the doorbell will push the notification to the cell phone, the owner can enter the cell phone video call interface and make a remote video call to check the situation at the door in real time.Specification:Item Type: WiFi Smart DoorbellMaterial: ABS, MetalLens Angle: 80Infrared Lamp Number: 4Night Vision Distance: Approx. 5-10m/16.4-32.8ftConnection Method: Cell Phone APPPickup Distance: Approx. 5m/16.4ftStorage Mode: CloudDoorbell Camera Battery Type: Lithium Ion BatteryDoorbell Camera Battery Capacity: 800 mAh ( Shipped With Built In Battery )Charging Interface Type: Type CAPP Name: for TuyaWiFi Version: 2.4GHZMobile System Support: for Android 4.3 or for iOS 9.0 or Above.Package List:1 x Doorbell1 x Receiver1 x Mounting Plate1 x Backing Adhesive1 x Manual1 x Charging Cable