The Nest Hello video doorbell allows you to see who is at the door at all times. With high-definition video quality and night vision, you will be able to see clear and sharp images even in the dark. This doorbell is designed to keep you informed about any movement at your door, whether it's a person or a delivered package. In addition, you will be able to access the live stream 24 hours a day and review the history of the last 3 hours in case you missed something important.