Secure your home with the comprehensive Blink Outdoor Battery-Operated Camera System. This four-camera system provides complete, wire-free surveillance, inside and out. Enjoy worry-free monitoring with a remarkable two-year battery life on just two AA lithium batteries per camera. Crisp HD video ensures clear images, day or night, thanks to integrated infrared vision. Communicate directly with visitors via two-way audio through the Blink Home Monitor app. Seamless smart home integration puts you in complete control. Guard your home around the clock with the Blink Outdoor Battery Operated Camera System with 4 Cameras. This discreet camera is completely wire-free and weatherproof. It can be placed anywhere inside or outside your home. With a battery life of up to two years on just two AA lithium batteries, you won't have to worry about recharging. Get a clear picture of whatever is happening with crisp HD video, even at night thanks to infrared vision. Talk directly to visitors through the Blink Home Monitor app using two-way audio. Blink Outdoor integrates seamlessly with your smart home, giving you complete control.