This Canon RC-6 Wireless Remote Control is designed to reduce camera shake and allow hands-free shutter release from up to 5 meters away. It is compatible with a range of Canon EOS DSLR cameras including the 450D, 500D, 550D, 600D, 60D, 7D, 5D Mark II, 5D Mark III, and 6D. The remote offers immediate shutter release or a 2-second delay. It operates via an infrared signal, requiring line of sight to the camera's receiver. The RC-6 supports "bulb" mode, which is beneficial for long exposures. Its compact and lightweight design makes it portable for various shooting situations such as movies, self-portraits, night scenes, long exposures, light painting, and macro photography. Ensure your camera is set to "remote control" mode in its menu for the remote to function. A CR2032 battery is included.