Designed for use with the nikon d7000 dslr the hahnel hn d 7000 battery grip fits to the base of the camera and allows you to double the power by using the battery in the body and an additional one in the grip the unit includes a built in infra red receiver and a separate remote control is also supplied as is a aa battery tray the grip includes a shutter button and command dial for use in portrait mode batteries not included