The Swann-Buddy4K Video Doorbell serves as a full-featured, easy-to-install wireless 4K security camera, intercom, and chime unit. It can operate 100% wire-free with the rechargeable battery or connect to your existing doorbell wiring. See every detail with a head-to-toe view and a super-wide 165 viewing angle. True-Detect senses heat & movement for reliable alerts. See in the dark up to 16ft or 5m with powerful infrared night vision and save 1000s of clips locally. Its security you can trust and best of all, it's fee free.