This 4-pack of 4 MP PTZ 360 Degree Pan Wireless Cameras with NVR and Solar Panels is perfect for any home or business security system. It features 4 channels, 4 megapixels, 2 way audio, cloud storage, motion detection recording, timed recording, stores video on up to 256 GB SD card (SD card included), motion detection at up to 30 feet, supports up to a 128 GB hard drive (not included), built-in spotlights, 355 degree pan, 90 degree tilt, and 4 solar panels to power the cameras and NVR. Get yours today to keep your home or business secure. These cameras are also great a transmiting signals through long distances, avoiding video downtime.