Canon Battery Grip BG-E11 Large capacity battery grip designed for the EOS 5D Mark III, ideal for high volume and easy vertical shooting Powered by up to two Battery Pack LP-E6, six AA-size/LR6 batteries or optional AC Adapter Kit ACK-E6 Improved ergonomics for comfortable holding Features a variety of operating controls: shutter button, Main Dial, multi-controller, AF point selection button, AE lock/FE lock button, AF start button, and multi-function button. Kit Includes: Battery Grip with Protective Cover; Soft Case for Battery Magazine; Instruction Book; Warranty Card