Digitek Battery Grip D800 is designed specifically for the Nikon D800, D800E and D810 DSLR cameras & accepts one EN-EL15 battery. With one battery in the grip and one in the camera, your shooting time is effectively doubled. Can also hold & utilize 8 AA batteries. Two battery trays, one for the EN-EL15 & one for the 8 AAs, are included. Design of a battery grip offers a comfortable and secure way in which to hold your DSLR, especially in the vertical position. Comes with an alternate shutter release button to facilitate shooting when held vertically. The shutter button offers a Lock Position to prevent accidental release. In addition, it has an alternate AF-ON button, Multi Selector & Main & Sub-Command dials. It is designed with an Anti-Slip Rubber Grip. A Tripod socket is included as is a holder for the camera’s contact cover so as not to lose it when it has been removed to install the battery grip
