Adopting the CPU control circuit and the thermo-resistant nylon housing - Integrates softwares protection and hardware protection provides super performance in the aspest of safety and reliability - With LED indicator: 4 LED power1 LED for charging status and 1 for working status - Especially useful on press sports and fashion photographing - Battery pack: Ni-MH battery 9.6V / 2000mAh - Battery charging time: Approx. 2 hours - Flash charging time: Approx.1 second (full power) - Flash time: Approx.250-320 times (full power) - Package included: - 1 x External Flash Battery Pack with Belt Clip - 1 x Cable for Canon 580EX/580EX II/550EX/430EZ/540EZ - 1 x 100~240V US Type Power Adapter - 1 x Car Charger (Input: 13.6V/600mA) - 1 x English/Chinese User Manual