--It is specially designed for Nikon D850 DSLR cameras. replacement MD-D18 .It is equipped with an alternate shutter-release button, AF-ON button, multi selector, and main and sub-command dials for shooting in a vertical position.
--This battery grip can hold one EN-EL15/EN-EL15a rechargeable Li-ion battery, in addition to the camera's internal battery. Eight AA batteries (Alkaline LR6,Ni-MH HR , or Lithium FR ) , can be used instead for more convenience.
--It will effectively extend your shooting time and enable shooting in the same fashion as a horizontal grip. After installed the grip on camera, you can change the battery option on the camera's menu at default settings, it will automatically option deplete the battery in the grip before using power from the battery in the camera.
Specifications:
Model: BG-2X
Power Sources:1xEN-EL15/ EN-EL15a or 8xAA batteries(LR6, HR, FR)