Blink Out of doors 4 (4th Gen) — Wire-free good safety digital camera, two-year battery life, two-way audio, HD dwell view, enhanced movement detection, Works with Alexa – 5 digital camera system

Outdoor 4 is our fourth generation wire-free smart security camera that helps you protect your home inside and out right from your smartphone.
See and speak from the Blink app — Experience 1080p HD live view, infrared night vision, and crisp two-way audio.
Two-year battery life — Set up yourself in minutes and get up to two years of power with the included AA lithium batteries.