1. Remote video calls can be handled without being . After the visitor presses the electronic doorbell, the doorbell will push the notification to the mobile phone, and the host can enter the mobile phone video call interface, remote video, and view the door situation in real time 2. Two way call, intelligent voice change, girls feel at ease alone. Two way voice design, with high-power speakers and high-sensitivity microphones, the visual call in front of the door is clear and smooth. Support voice change intercom, change boys, and deal with various situations 3. High definition wide-angle lens safety protection without dead angle. With the of wide-angle lens, you can have a panoramic view of the situation in front of the door, so that there is no "safety corner" left in the door, and multiple visitors can also see it one by one 4. Full encryption and automatic cyclic coverage of cloud storage. Visitor records are saved in the cloud, and data encryption is more secure. You can view visitor records through mobile app anytime and anywhere, and you know the situation like the palm of your hand 5. The day and night dual- camera can clearly display the night image , Built in high-power infrared night vision lamp, combined with ICR infrared filter, can automatically switch day / night mode. Even in the dark environment where you can't see your , you can see clearly and clearly Connection mode; Bluetooth &wifi Viewing angle: 60 Pickup distance: 3 meters Battery: 3 AAA batteries (excluding dry batteries, which need to be purchased by the customer) Storage Cloud Night vision lamp: 850n night vision lamp Colour:White Material:plastic Package Contents: 1 x Video Doorbell Camera 1 x Ding Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.