Outdoor 4 is our fourth-generation wireless smart security camera with up to two-year battery life for around-the-clock peace of mind. Experience wireless smart security that sets up in minutes and can be placed almost anywhere around your home. See and speak to people and pets right from the Blink app with HD live view, infrared night vision, and crisp two-way audio. In the box: Includes two Outdoor 4 cameras, one Sync Module Core, four AA Energizer lithium batteries, two mounting kits, one USB-C cable, and one power adapter.