The Profoto AcuteB 600 Generator is a powerful yet ultra-compact battery-powered flash pack with the capacity for 160 full-power bursts per charge. The AcuteB 600R has a seven f/stop range from 9 to 600 w/s, and features a replaceable and rechargeable sealed lead-acid battery that can easily be swapped out while on location and recharged with the included multi-voltage charger. This power pack weighs less than 11 lbs (3.2kg).