The DM-MC 35BP is a valuable tool for easy installation of CCTV cameras fro surveillance or security. It's small 3.5" LCD monitor allows you to connect directly to the camera and view or adjust it without going back and forth to the DVR. It's built-in Li-Ion battery provide long lasting power, and the recharger is also included in the package. This important tool and can be hang on the neck, shoulder, arm, or belt for easy out-of-the-way setup, and all cables are included: Video/Power to the camera and AV out.