See who is at your door from anywhere with the Vivitar WiFi smart doorbell with USB chime kit. Infrared night vision up to 10 Feet away; Snapshot & push notification when bell is rung; 2-Way audio with built-in mic & speaker. Video lets you see who you're speaking to; Video recording on your phone. Built-in lithium Rechargeable battery with a remarkable 1 month battery life + USB-C charging. Full duplex intercom capabilities; Micro-SD card slot.