Features:
This battery grip/holder is compatible with for Canon EOS 550D/600D/650D/700D Rebel T2i/T3i/T4i/T5i SLR cameras. 
It supports features such as AE lock and FE lock， and retains access to the Index/Reduce button， main dial， AF-Point Select button， and Aperture/Exposure Compensation Buttons. 
The grip has a built in vertical shutter release button， and can hold 2 *  LP-E8 lithium-ion battery packs， or 6 * AA batteries using the included battery holder. 
Has a tripod socket. 

Specifications:
Item type: Vertical battery grip
Compatible with: for Canon EOS 550D/600D/650D/700D Rebel T2i/T3i/T4i/T5i SLR cameras
Power source: 1 * LP-E8 battery and 6 * AA batteries(not included)
Material: ABS & PC
Item size: 131.8 * 108 * 79.9mm / 5.2 * 4.3 * 3.2in
Item weight: 245g/ 8.6oz
Package size: 16.5 * 14 * 8cm/ 6.5 * 5.5 * 3.1in
Package weight: 375g/ 13.34oz

Package Lists:
1 * Battery Grip 
2 * Battery Holders (battery not included)
1 * User Manual(Chinese)