Features: 1.APP Function: The wireless doorbell camera adopts APP design, which makes the operation clearer, the interface is simple, and easy to use 2.Multiple WIFI Connections: The video doorbell supports long distance signal transmission, video and voice calls, and short term video recording. Support WIFI to connect multiple users, can watch online at the same time 3.Human Body Sensor: The doorbell has a built in human body sensor (PIR), which can record video when someone appears outside the door, and the recording can be played back by the APP, with doorbell button and mobile phone wake up function 4.Real Time Monitoring: The wireless doorbell camera supports real time monitoring of mobile phones, so that you no longer worry about home security 5.Energy Saving Battery: The wifi doorbell camera requires no wiring, is easy to install, and uses low power technology to effectively save battery specification:Item Type: Wireless Doorbell Camera Material: ABS Function: Two Way Talk, Night Viewing Function, Mobile Phone APP, Motion Detection, Wide Angle Viewing Angle, Support Memory Card Resolution: 1280x720 Viewing Angle: 1.7mm at F2.4/166 WIFI: 802.11B/G/N Storage Memory Card Storage: Maximum Support 32G Battery Type: 2 x 18650 Batteries (not included) PackageList:1 x Wireless Doorbell Camera 1 x Hanging Board 1 x Sticker 1 x User Manual 4 x Ordinary Screws 4 x Screw Covers 1 x Hex Socket Screws 1 x Hex Wrench NoteShipped Without Battery