12 Way Audio: Doorbell camera has built in microphone and speaker, provides 2 way talk, allows you to have clear real time communication with your visitors via your phone. 2APP Monitoring: The doorbell supports mobile APP remote monitoring, support for TUYA APP, supports photography and video recording, more secure to use. 3Wide Viewing Angle: Designed with 85 Degree viewing angle, ring the doorbell for real time screen intercom, so you can clearly see who is visiting. 4Voice Changing Design: Press the doorbell to start quickly and push messages. The unique voice changing system allows women to be alone at home and easily deal with emergencies. 5Long Standby: The power consumption is super low and the standby is super long. So you don't have to worry about the doorbell running out of power.