EACHSHOT MK-DR750 Built-in 2.4g Wireless Control Battery Grip for Nikon D750 AS MB-D16 + 2pcs Battery + Charger Use FSK 2.4G wireless transmission frequency, anti-jamming, signal more stable. Vertical shutter with half-press function. More comfortable vertical shooting. Doubling the battery capacity of your camera, effectively extending your shooting time. The Replacement MB-D16 is equipped with a shutter release button, AE/AF lock button, multi selector, and main- and sub-command dials for improved operation when taking photographs in portrait orientation. buttons and custom buttons.