The Marshall Electronics M-CT7 7" Portable Camera Top Field Monitor with AA Battery Plate is an LCD monitor that attaches directly to a DSLR or HD video camera. It comes equipped with a AA battery plate. The field monitor contains 800 x 480 pixels and supports up to 1920 (H) x 1440 (V) resolution by scaling it down to its native resolution. A great tool for photographers and videographers, it enables you to focus clearly on your shots and eliminate the guesswork from framing. It blows up your tiny built-in camera screen to a much larger display that enables easier viewing and won't strain your eyes.