A must have for D800 enthusiasts, this battery grip from Nikon gives you extended shooting time plus increased comfort and balance as you snap photos. It attaches to the bottom of your D800, providing a convenient grip when holding the camera in the vertical position. It offers a shutter release button, front and rear command dials, and a joystick control for setting focus points. The magnesium frame and rubberized surfaces match your D800 perfectly and give it a more professional look and feel. The grip holds an optional EN-EL15 or EN-EL18 Nikon battery, or lets you operate your camera using eight "AA" batteries (not included).