The Profot B1 is a completely cordless 500w strobe. Powered by an exchangeable battery and wirelessly synced and controlled with the Air system, it allows the photographer to bring the B1 anywhere and place it without regard to cable length. The battery will provide up to 220 full-power fl ashes, while the Air system has an operating range up to 300m (1,000ft).
It is about ten times as powerful as the average speedlight. This is enough to overpower the sun on a sunny day, or to light up larger sets or groups of people. The light output can be controlled in 1/10 f-stop steps over the entire 9 f-stop power range. The B1 is also equipped with a high-efficient LED modeling light, powerful enough to be used as a portable video light.
The speed of B1 is also worth noting, much thanks to the innovative Quick Burst. Quick Burst is a fully automatic feature built-into the B1, allowing the photographer to shoot up to 20 flashes per second at lower power setting. At full power, the B1 will recharge in less than two seconds.
As any other Profoto flash, the B1 is compatible with a wide assortment of Light Shaping Tools. More than 120 tools are available, each with its own distinct effect on light characteristics, distribution and output.