Canon Speedlite 270EX II is a Ultra-compact, ultra-lightweight, and high-performance flash unit. It features Flash coverage can be switched between Normal (28mm full-frame equivalent, max. Guide No. 72 ft./22m at ISO 100) and Tele (50mm full-frame equivalent, max. Guide No. 89 ft./27m at ISO 100) with Vertical bounce capability up to 90 degrees provides a wide range of picture-taking options that completed with Slave function allows the flash to be triggered wirelessly (when used with an EOS DSLR with a master function) include Flash release function triggers the camera wirelessly from the flash on a 2-second delay, allowing the flash to be repositioned to illuminate the subject. The Canon Speedlite 270EX II measures (W x H x D) 65.8mm x 65.2mm x 77mm / 2.6 in. x 2.6 in. x 3.0 in. and weighs 155g / 5.5 oz (without batteries).