Features:
1080p HD video doorbell with enhanced features that let you see, hear, and speak to anyone from your phone, tablet, or PC. 
An update from the original Ring Video Doorbell, enjoy improved motion detection, privacy zones and audio privacy, and crisper night vision. 
Receive mobile notifications when anyone presses your doorbell or triggers your built-in motion sensors. 
Powered by the built-in rechargeable battery or connects to existing doorbell wires for constant power. 
With a Ring Protect Plan (subscription sold separately), record all your videos, review what you missed for up to 180 days, and share videos and photos. 
Pair with select Alexa-enabled devices to enable announcements and two-way talk for convenient in-home monitoring.