Works with selected Alexa devices to launch real-time video with your voice. Lets you see, hear and speak to visitors from your phone, tablet and PC. You’ll get a notification when movement is detected or when visitors press the Doorbell. Works on any home, with or without existing doorbell wires. Comes with an easy to recharge battery. Monitors your home in HD video with infrared night vision. Lets you check-in on your property at anytime with Live View, real-time video. Includes Theft Protection: if your doorbell gets stolen, Ring will replace it for free.