This MB-D10 MBD10 battery grip is a powerful and versatile accessory for the Nikon D300 D300s D700 digital SLR cameras. It takes one EN-EL3E rechargeable battery or eight AA batteries (alkaline, Ni-MH, lithium, or nickel-manganese) and is equipped with shutter-release button, AF-ON button, multi-selector, and main and sub-command dials for taking pictures in "tall" (portrait) orientation. Camera menu options allow the user to choose whether the camera battery or the batteries in the grip are used first. A contact protective cap is included in the package. Our MB-D10 grip is the replacement for Nikon OEM MB-D10 grip, and it comes with 1-year warranty!