Feature: 1. Compatible with Canon EOS 5D Mark III Cameras. 2. Features shutter release button, main dial, AE lock and AF point selection button for easier vertical shooting 3. Comes with battery holders for 2 * LP-E6 battery and 6 * AA batteries, effectively increase the camera operating time. 4. This battery grip/holder is compatible with Canon EOS 5D Mark III Cameras. 5. Features shutter release button, main dial, AE lock and AF point selection button for easier vertical shooting. 6. Has a tripod socket. Specification: Features: This battery grip/holder is compatible with Canon EOS 5D Mark III Cameras. Features shutter release button, main dial, AE lock and AF point selection button for easier vertical shooting. Comes with battery holders for 2 * LP-E6 battery and 6 * AA batteries, effectively increase the camera operating time. Has a tripod socket. Specifications: Item type: Vertical battery grip Compatible with: For Canon EOS 5D Mark III Replacement: For Canon BG-E11 Power source: 2 * LP-E6 battery and 6 * AA batteries(not included) Material: ABS Operating temperature: 0-40℃ (32-104℉) Item dimensions: 153.4 * 116.4 * 85.03mm/ 6.04 * 4.58 * 3.35in Item weight: 369g/ 13.01oz Package dimensions: 15.5 * 12.6 * 9cm/ 6.10 * 4.96 * 3.54in Package weight: 461g/ 16.25oz Package Contents: 1 * Battery Grip 2 * Battery Holders 1 * User Manual Package List: 1 * Battery Grip 2 * Battery Holders 1 * User Manual