Add even more security to your front door with the Video Doorbell 4. Enjoy extended battery life and optimized performance, improved dual-band Wi-Fi, and full-color video previews that give you a complete picture of what's happening. Start recording video even before you receive motion alerts with pre-roll video previews in color. With up to 4 seconds of additional color video, you'll always know exactly what happened before your package was delivered or other motion was detected. In addition to enhanced Wi-Fi and pre-roll color video previews, the Video Doorbell 4 features a quick-change battery for easy charging, HD video, intercom, night vision and advanced motion detection with user-definable motion zones. Key benefits at a glance: HD video and live video let you see what's going on at home. Pre-roll in color gives you an even more complete picture of what's happening at your front door. Talk to visitors at your door from anywhere with the intercom feature. Advanced motion settings for real-time notifications on your smartphone or tablet. Powered by a replaceable rechargeable battery. Easy self-installation. Complete control with the Ring app. Never miss an event again with connected devices. Connect all your Ring devices in the Ring app and see them work as a team to protect you 24/7. Get instant notifications on your smartphone or tablet - whether you're sitting on the couch, working out at the gym, or in the office. See, hear and talk to visitors at your front door via real-time video and audio.