CamDesign IR Wireless Shutter Remote Control for Canon Nikon Sony Olympus Pentax Sigma Minolta Leica and Other DSLR Cameras + CamDesign Wristband Lens Focus Ring Universal DSLR compatibility, compatible with cameras with an infrared sensor trigger your camera shutter release remotely from a distance of about 16 Feet to 26 Feet Autofocus & shutter release functionality Recommended for minimizing vibration when using the camera Includes a CR-2025 3v battery