This is OEM product , It is not made by Canon.
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.
Full One Year Warranty.
