Blink Outdoor 4 — Wireless smart security camera, two-year battery, 1080p HD day and infrared night live view, two-way talk — 2 camera system

Outside 4 is our fourth generation wire-free smart security camera that helps you give protection to your own home in 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 rise up to two years of power with the included AA lithium batteries.
Enhanced motion detection — Be alerted to motion faster from your smartphone with dual-zone, enhanced motion detection.
Person detection — Get alerts when a person is detected with embedded computer vision (CV) as a part of an optional Blink Subscription Plan (sold one after the other).
Save and share clips — Select to store events in the cloud with a free 30-day trial of the Blink Subscription Plan or in the neighborhood with the Sync Module 2 (included) plus a USB drive (sold one after the other).
Works with Alexa — Connect to an Alexa-enabled device to engage live view, arm and disarm your system, and more the use of your voice.
Includes two Outside 4 cameras, one Sync Module 2, four AA lithium metal batteries, two mounting kits, one USB cable, and one power adapter.