The hahnel hn d600 battery grip is a smart alternative battery grip to nikons mb d14 for the nikon d600 and d610 and offers space for one more additional rechargeable battery hl el15 or en el15 or six aa batteries the built in infrared receiver allows remote control of the shutter release of the camera in any setting manual av tv program etc this ergonomic professional grip is fitted with a vertical shutter and horizontal release to ensure comfortable shooting at all times the hn d6