The Yale Smart Video Doorbell will give you 2 - 4 days of footage (approx. 35 x 10second clips at 1080p / 75 x 10second clips at 720p),The Yale Smart Video Doorbell lets you see, hear and speak to visitors from anywhere, anytime. Offering a crisp 1080p HD image, a 154° field of view, two-way audio talk, live viewing, and night vision for clear footage that can be viewed 24/7 in the Yale Home app, the Yale Doorbell is easy to set up and use. For ultimate ease, you can choose to have your Doorbell powered either via the built-in rechargeable battery or hard-wired into the mains.