100% wire-free installation, 2.4G Hz WiFi connectionBuilt-in rechargeable battery powered and 5V 1A USB cable poweredSupport Cloud Storage service for alarm events recordingVideo call. When visitore press the doorbell, a video call will be received at APP(Only at the APP interface), and receive a notification that APP pushedTwo Way Audio. Built-in Mic and speaker, talk with visitor in real-timeClear Night Vision. Provide monitoring in day and nightSupport indoor chime. A clear indoor chime ringtone can be heard Sharing device. You can sharing the doorbell with your familiesDownload free APP "SmartLife" from and StoreColor: WhiteMaterial: plasticPackage Contents:1 x Tuya Wireless DoorbellOnly 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.