Phottix Battery Grip BP-550D (BG-E8) Premium Series Vertical Grip/Battery Holder for Canon EOS 550D / Rebel T2i / 600D/ 650D / T3i digital cameras. This battery grip can hold two batteries LP-E8 or six size-AA batteries. It is also equipped with a vertical-grip shutter button, Main Dial, AE lock/FE lock and AF point selection controls for easier vertical shooting. Also has Tripod Socket.
comes with: Battery Holder for two LP-E8 or six AA batteries Instruction Manual