Allows the Nikon D800, D800E, and D810 to be powered by two EN-EL15 batteries Effectively doubling your shooting capacity Comfortable vertical grip with an additional shutter release and scroll wheel With the included AA battery holder, users can also power the camera with 8 AA batteries The 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 shooting capacity Colour: Black Material: Plastic Size: 15.07 x 8.1 x 5.03 cm Package Contents: 1 x Battery Grip 1 x Li-ion Battery Holder 1 x AA Battery Holder 1 x User Manual Only the above package content, other products are not included Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm