Opteka Battery Pack Grip / Vertical Shutter Release With 2 Opteka LP-E6 LPE6 2400mAh Ultra High Capacity Li-ion and Rapid Charger for Canon EOS 5D Mark 2 3 II III 5DM2 5DM3 6D 7D 60D 60Da 70D DSLR Digital Camera Holds 6 AA or 2 LP-E6 Batteries Buttons for AE lock, AF point selector, aperture value, shutter, and mail dial Increases functionality and convenience Vertical shutter release also makes shooting with the camera in a vertical position just as comfortable as shooting horizontal 1 Year Opteka Warranty