The Precision BG-N4.2 Battery Grip for Nikon D7000 is a battery grip designed for use specifically with the Nikon D7000 digital SLR camera. It accepts a single EN-EL15 battery (includes battery chamber). In addition, the included AA battery holder allows you to use 6 AA batteries for added convenience.
The BG-N4.2 Battery Grip offers an alternate shutter release button, main and sub command dials, multi selector, and an AE-L/AF-L button to facilitate shooting in a vertical orientation.