Item Type: Video Doorbell Remote Monitoring Solution: For Broadcom, for BK Viewing Angle: 125 degrees Built In Battery: 400mAh lithium battery Power Input: 5V-2A Storage Function: Up to 64G small memory card(not included) memory expansion Voice System: Two way audio, mobile remote quick view Recording Range: Approx. 5meter / 16.4ft Wireless Connection: IEEE802.11b/G/N 2.4GHz, RF 433MHz Supported System: For Android 4.3 or for iOS 9.0 or later Interface: Type C charging port Material: AB 1、INSTANT NOTIFICATION: When the video doorbell is pressed, the phone will receive an instant push notification so you know that someone is at your door. Tap the Push window to enter a high definition video call, and you can see who is at the door on your phone. Before responding, you can view the video and then decide whether to ignore or answer 2、CLEAR NIGHT VIEWING: The video doorbell has built in speakers that allow you to talk to visitors remotely through your phone and doorbell. Supports HD night viewing shooting. So you can see every visitor from head to toe. You can also see packages left on the ground below the doorbell 3、DOORBELL SHARING: Enter the APP real time interface, click on the upper right to set, share the device, add the share, enter the registered account. You can share the video doorbell with your family 4、LOW BATTERY REMINDER: When the battery is low, the APP will push a reminder, please charge in time. Video doorbell host built in 400mAh rechargeable battery, long standby time, rechargeable design, without complex wiring, more convenient 5、INCLUDING DOOR BELL: With door bell, which will ring to alert you when someone rings the doorbell. Ringtone volume is adjustable, there are different ringtone music to choose from 6、EASY TO USE: The doorbell supports portable installation, no wiring or drilling is required, and installation via double sided tape is very simple. Directly connect to WiFi IEEE802.11b/G/N 2.4GHz(5GHz WiFi is not supported) 1 x Video Doorbell Host 1 x Video Doorbell Sub Machine 1 x Charging Cable 1 x Double Sided Tape 1 x Punching Free Mounting Panel 1 x User Manual