Ring Wi-Fi Enabled Video Doorbell. Monitor your front door from your smartphone or tablet! Chimes on all of your connected devices when you have a visitor. Operates wirelessly for over a year before needing to recharge. Pair multiple devices (there's no limit!). Weather resistant: built to withstand humidity, rain, sleep, snow, ice and extreme heat. Recharges via Micro USB. Measures 1.3" x 2.39" x 5.68" Quick and easy install. Answer the door from anywhere in the world. Ring, a Wi-Fi enabled video doorbell, allows you to see and talk with visitors through your smartphone from anywhere, whether you're in the kitchen or half way around the world. It even works when your phone is roaming on cellular networks and has built-in night vision, so you can rely on clear audio and video quality around the clock. An extra eye on your front door means an extra layer of home security. When a visitor presses Ring, it will chime simultaneously on all your connected devices, linking you directly to your front-door visitor. Answer the door and get a live video stream directly to your smartphone or tablet. Get alerted when dinner guests arrive or when a delivery shows up at your second home or rental property. Whether near or far, Ring gives you added peace of mind. Ring mounts in minutes. Just pivot the adjustable camera to the position you'd like, and place Ring on the included mounting bracket. Then, secure with the included proprietary security screw to help prevent theft. Plus, if your Ring doorbell is ever stolen, we'll replace it free of charge. See and talk to your visitors from anywhere in the world.