Allows the D800, D800E, and D810 to be powered by two EN-EL15 batteriesEffectively doubling your capacityComfortable vertical grip with an additional shutter release and scroll wheelWith the included AA battery holder, users can also power the camera with 8 AA batteriesThe MB-D12 Series Multi-Power Battery Grip allows the D800, D800E & D810 to be powered by two EN-EL15 batteries -- one in the camera body and one in the MB-D12 -- effectively doubling your capacity.Colour: Black material: plasticsize:15.07*8.1*5.03cmPackage Contents:1x battery grip1x Li-ion battery holder1x AA battery holder1x user manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.