Mcoplus MK-DR750 MB-D16 Built-in 2.4G Wireless Control Battery Grip for EN-EL15 Nikon D750 DSLR Camera Built-in FSK 2.4G UP to 100M transmission distance Remote control 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 LCD display Timer remote function, setting the delay time, exposure time, interval and number of sheets photo It can use EN-EL15 battery or 6pcs AA/LR 6 Alkaline Battery(Battery not inclued)