... Battery Godox PROPAC PB960 Dual Output Power Pack adds a power output port so as toproviding power to two flashes at the same time ... , 580EX II andother flash model with same type of input power portNxNikon SB910, SB28 EURO, SB28DX, SB80DX, SB800, SB900 and otherflash ... * battery pack1* AC charger1* Shoulder strap1* instruction manual PROPAC PB960 Power Pack for Speedlite (11.1V/4500mAH Battery Block)