Flash Output. The Profoto B10 OCF Flash Head offers a 250Ws maximum output, with 10 stops of adjustment in 1/10 or 1-stop increments. Maximum recycle time at full power is 2.2 seconds, and a Freeze Mode allows you to prioritize flash durations as short as 1/50,000 sec. All of this in a light the size and shape of a camera lens.

LED Modeling Light. The built-in modeling LED provides the equivalent of 150 W incandescent light. It’s dimmable and boasts a 3000 to 6500K color temperature and a CRI of 90-96, which makes it great for video.

Supports TTL Air Remote. The B10 OCF offers full TTL support when matched with one of the Profoto Air Remote TTL Transceivers for Canon, Nikon, Sony, Fuji, and Olympus. Please note that these are separate rental items.

Triggering Options. This strobe has a built-in Profoto Air radio receiver, allowing it to be triggered by any of the TTL remotes above. You can also use the Profoto Air Remote Transceiver if you’re comfortable with manual power adjustment. You’ll get 300 feet of range when triggering in TTL mode, and 1,000 feet with normal radio triggering. Additionally, there’s a built-in optical secondary flash. Unfortunately there is no external sync port.

Battery Power. The included lithium-ion battery provides about 400 full-power flashes per charge, or up to thousands of flashes when you lower the power output. The battery attaches to the side strobe housing itself, making it easy to move around with. The strobe cannot be AC powered, so once the battery is depleted you’ll need to recharge or swap batteries before you can continue shooting.