100% WIRELESS OPERATION: Enjoy the freedom of a long-life rechargeable battery or harness the power of your existing doorbell wiring for uninterrupted operation. It comes with mounting screws & hardware and a USB Charging Cable, and with Swann's app, you can monitor your camera remotely from anywhere CLEAR 1.7MP (1296 x 1296 pixels) RESOLUTION: The security camera captures clear and detailed video footage. From files to packages, catch every detail around the clock day or night WIDE 140° VIEW: .Expanded head-to-toe view with a 140° viewing angle so you can see faces at the door & packages on the ground.Its HD camera with a wide 140° viewing angle captures HD color video in ambient light with powerful night vision in B&W TWO-WAY AUDIO: The Swann EVO Wireless Video Doorbell smart video doorbell features two-way audio, allowing you to greet guests or warn intruders.It's perfect for keeping an eye on your property or checking in on loved ones FREE RECORDING:Say goodbye to subscription fees & have full control to review & store footage by simply adding a MicroSD Card.Power up the doorbell using built-in 5200mAh rechargeable battery or hardwire it