Powerextra BG-E11 Battery Grip + AA-size Battery Holder With Remote Control Replacement For Canon 5D Mark III/5DS/5DSR Digital SLR Camera Work with LP-E6/LP-E6N batteries or 6 Pieces AA batteries Package with infrared remote control. Perfectly work with Canon EOS 5D Mark III, 5DS, 5DSR Digital SLR Camera. Features anti-slip rubber gripping and a securely locking battery chamber door Provides comfortable and secure handling when shooting in the vertical position Including a secondary shutter release button, AF start button, AF point selection, AE lock/FE lock button, multi function button, and main dial Accepts up to 2 LP-E6/LP-E6N batteries or 6 AA batteries to effectively double the camera's battery life A tripod socket on the bottom of the grip can be mount on a tirpod, easy install and uninstall, horizontal and vertical shutter fit different shooting experience