Features:

• Dual-powered: Runs off the internal battery or can be connected to existing Doorbell wiring.
• Dimensions: 4.98in. x 2.43in. x .87in.
• Communicate with visitors via two-way audio with noise cancellation.
• Protect your home - day or night - with infrared night vision.
• Get instant alerts when visitors press your Doorbell or trigger the built-in motion sensors.
• Lifetime purchase protection: If your Ring Doorbell gets stolen, we'll replace it for free!
• See, hear and speak to anyone at your door from your smartphone, tablet or PC.
• Set up your Doorbell in minutes with the included tool kit and installation guide.
• Check-in on your property at any time, and get streaming video and audio with Live View.
• Watch over your home in crystal-clear HD video.
• Compatible with iOS, Android, Mac and Windows 10 devices.