The Bower Professional Battery Grip for Nikon D3100/D3200/D5100/D5200/D5300 Cameras provides the power you need for the Nikon your DSLR digital camera with two EN-EL14 rechargeable, high-capacity batteries. In addition, the battery pack provides a vertical shutter release that makes holding the camera in the vertical orientation as easy and secure as in the horizontal position. A wireless infrared remote control transmitter is included, which can extend battery power. The battery grip has a built-in infrared sensor. The transmitter includes the CR-2025 to operate it. The EN-EL14 batteries for the grip are not included.