Blink Video Doorbell + Outdoor 4 – Wireless smart security cameras, head-to-toe HD view, two-year battery life. Sync Module Core included – 1 camera system + Video Doorbell

Our second-generation Video Doorbell and fourth-generation Outdoor 4 cameras offer up to two years of battery life and improved security features for more peace of mind, no matter where you are. Last longer with two-year battery life — Experience up to two years of smart security coverage on both devices with included AA Energizer lithium batteries and a Blink Sync Module (included with Outdoor 4). See and speak from the Blink app — Experience head-to-toe HD viewing from Video Doorbell and 1080p HD live view from Outdoor 4 as well as infrared night vision and crisp two-way audio. See more at your door with Blink Video Doorbell — Greet guests and watch packages get delivered, day and night, with head-to-toe HD view and infrared night vision. Use two-way talk to hear and speak through the Blink app.