Quantum has put together this 3-Head Flash Kit with Trio and T5dR Flash Heads and Turbo 3 and Turbo SC Batteries for Canon Cameras to give photographers a lightweight and portable location kit. Additionally the flash units are wirelessly controlled by your camera's TTL via the kit's CoPilot Wireless TTL Flash Controller. Power is provided by two Turbo 3 and one Turbo SC battery. The kit also includes two wireless receivers three 8' air-cushioned light stands three clamps to mount the batteries to the stands three umbrella brackets and three 45 umbrellas as well as a padded case.