The battery grip is equipped with a vertical-grip 2-Steps shutter button(support half-press focusing and full-press shooting), 1/4" Tripod screw mount. to enable shooting in the same way as a horizontal grip. 
It have a shutter remote cable connect to the camera's remote port,you have to connect the battery grip with camera with the connecting cable to make it work.
With battery cover holder that can place the camera battery cover to prevent loss.