Based on the popular D1 Air series of monolights, all of the familiar professional and convenience features we've come to expect from Profoto are onboard. The B1 has the same dense, durable polymer housing, integrated 77-degree reflector, built-in receiver compatible with Air transmitters and intuitive highly visible controls and display as the D1 but with two striking differences - battery power and TTL camera/flash integration.
Busy photographers can literally set up their lights, slip the optional Air Remote TTL-C transmitter onto their camera's hot shoe and point-and-shoot without taking a reading and testing.
The B1 recycles in 0.1 to 1.9 seconds but can deliver up to 20 flashes per second in Quick Burst Mode which engages at lower power settings. Flash duration in Normal Mode is a very fast 1/1000 sec but there's also a Freeze Mode that delivers flash durations a short as 1/19,000 sec. for capturing liquid sprays or splashes and other creative effects. The modeling light has also been upgraded to LED to put less strain on the battery and provide the equivalent output of a 70W halogen bulb.