Back in 2013, Profoto announced the Profoto B1 Studio flash, which would go on to change the world of on location photography. With battery powered TTL, the Profoto B1 was an all in one unit, allowing up to 200+ flashes at full power. Well today, they announced it's sidekick, the B2.
The first thing you may notice, is that the B2 is significantly smaller than the B1 studio strobe. At about half the size, the Profoto B2 allows for 250Ws on location, using the new innovative battery system.
Alongside the TTL functionality, the B2 is also equipped with HSS, while maintaining 5 times the power of a standard speedlight. All of this comes in a unit at under two pounds in size (1.5 lbs to be exact). Specific specs are listed below --
Max energy: 250Ws
Energy range: 9 f-stop (2.0-10.0 ; 1/256-1/1)
Recycling time: 0.03-1.35s (Quick burst up to 20 flashes/second)
Flash duration Normal mode (t0.5): 1/9300 s (1Ws) - 1/1,000 s (250Ws)
Flash duration Freeze mode (t0.5): 1/15,000 s (1Ws) - 1/1,000 s (250Ws)
Guide number @ 2m / 100 ISO with Magnum Reflector: 32 2/10
Battery capacity: Up to 215 full-power flashes
Max modeling light: LED 9W (Equivalent of 50W Halogen)
Synchronization and control
Radio sync & control: Yes, built in AirTTL supporting wireless sync, control
Generator (incl. battery) 6 x 8 x 17 cm 6.3 x 3.1 x 6.7 in
Head (excl. stand adapter) 10 cm / 3.9 in Ø 10.3 cm / 4.0 in length
Generator (incl. battery) 1.6 kg / 2.2 lbs
Head (excl. stand adapter) 0.7 kg / 1.5 lbs
Alongside the B2 announcement, is a series of new Off-Camera Flash Light Shaping Tools, allowing for full control using grids, snoots and other modifiers in an all new light weight system.