Profoto AcuteB2 600 AirS/R Power Pack w/Pocket Wizard

Profoto's AcuteB2 600 AirS/R Power Pack w/Pocket Wizard supplies 600Ws of portable flash power in a compact, lightweight (7.9 lb/3.6 kg) package, with the most advanced long-life battery (a Lithium Ion Iron Phosphate, or LiFe, battery) now available. The AcuteB2 gives you everything you want in portable power--up to 200 flashes at full power, super fast recycle time (0.08-2.0 seconds), flash duration as short as 1/6800s, and variability over a range of 7 f-stops (9-600Ws). The LiFe battery gives you up to four times the battery life of previous batteries. The built-in Profoto AirS radio sync receiver provides remote synch from up to 980' (300 m) away (with AirS radio trigger, available separately), plus a Pocket Wizard receiver is built-in, giving you full remote control over the flash (with Pocket Wizard trigger, available separately).