Compatible with following flash: 

• Nikon flash: SB-11, SB-20, SB-22, SB-24, SB-25, SB-26, SB-27, SB-28/28DX, SB-80DX, SD800
• Canon flash: 580EX II, 580EX, 550EX, MR-14EX, MT-24EX 
• Sony flash: HVL-F56AM

Quick Overview:

This product adopts 6 pcs AA batteries, it can increase the flash light working ability, suitable for Canon, Nikon, Sony flash light, perfect choice for professional photographer and shutterbugs.

Features:

• Performance: the external battery pack can reduce the recycling time, and increase flash times of flash light, suitable for using in continuous flash.
• Convenience: Adopts 6 pcs AA batteries, it can increase the flash light working ability.
• Protective Case: Matched with protect case, it can be placed on the belt or bag, it is convenient to carry.
• Power supply: 6 * AA battery (the battery is not included)
• Operating temperature: 0℃-40℃
• Product weight: 147g
• Product size: 15.5 * 6.5 * 2.5cm

Package list:

• 1 x Flash battery pack
• 1 x Protect bag
• 1 x User manual