With the Video Doorbell 3 Plus, you can see, hear, and speak to visitors from anywhere. Always know what's happening - day and night. Customize your motion settings to focus on important areas and benefit from a better connection between you and your home with dual-band Wi-Fi. Pre-Roll allows you to view an additional 4-second video of events that occurred before a motion event was triggered - a feature that is making its market debut for battery-operated doorbells and is exclusively available from Ring. The Pre-Roll video is displayed in black and white and in low resolution to conserve the battery life of your video doorbell.