Our Small Wall blends seamlessly with any setting. The Wall Clock is a fully functioning surveillance system, with a high-quality CCD Camera built inside, the Camera is virtually hidden. We integrate a 2.4 GHz 4 Channel Transmitters to create a wireless system for ease of placement and include a matching 4 Channel Receiver. Why 4 channels? This allows the user versatility in a wireless application. Each small wall clock has a choice of Black & White or Color Camera.