A clean used device like surveillance cameras, 3 indoor and 3 outdoor. (Has internal memory) (Supports night vision) (Supports sound) (Equipped with a microphone) Cameras can be monitored via an app on your phone. You can see angles by rotating 360 degrees. There are 15-meter and 20-meter cables, a remote control, and a mouse. The screen works, but it's a black screen and needs maintenance.