The Profoto Pro-B2 1200R Ws Power Pack with Radio Slave provides an 8-stop flash adjustment. It may be fired by your Pocket Wizard transceiver or transmitter with its built-in 32 channel radio slave receiver. The Pro-B2 can provide 200 full power flashes per charge. Achieve action-stopping flash durations, even at maximum power output. Recycle time is 1.8 seconds @ full power, and .04 seconds @ 600 Ws.
Using the snap-on universal power adapter, the Pro-B2 can operate as a regular AC powered flash generator while the battery is being recharged. The adapter is fast, charging an empty battery in just 2.5 hours, and it accepts a wide range of input power: 12-24V or 90-240V. Included with every Pro-B2 is a standard 110/230V charger, loading the battery in 5 hours. In addition, the Pro-B2 battery is completely memory free; there is no penalty for partial charging.