Nikon MB-15 High Power Pack

The ergonomically designed Nikon MB-15 provides an alternative shutter release button, an AF start button and the command dial, which all make shooting vertical-format pictures much more comfortable. It runs on either six AA-size alkaline, lithium, or NiMH batteries. The MB-15 boosts film advance speed from 4.5 to 5.0 fps - regardless of the type of batteries used.