Features 1. Infrared night vision, incandescent lamps can be configured according to the intensity of ambient light. Automatically switch between day and night modes, and you can see its unrelated environment. 2. This is the doorbell and also the surveillance. You can check the status in front of the door anytime and anywhere through your phone. 3. Ultra long battery life: It does not require disassembly and replacement. It does not require frequent charging. After charging once, it can be used for 3 to 4 months. There is also a notification of low battery power here, which is a continuous protection for your home's safety. 4. Voice change intercom: Even when alone at home, you can easily cope. Choose voice change intercom to protect your identity and prevent harassment. 5. Wireless installation: It is not bound by wires, does not require drilling, can be easily peeled off and pasted, does not damage the original decoration, convenient and practical. (without battery) Specification Material: ABS Color: Black, White Size: 8 x 4.6 x 2 cm Weight: 208 g Package Include: 1x Video Doorbell Wireless