The AlienBees B1600 is a powerful, self-contained studio flash unit, producing 640 true wattseconds and 1600 effective wattseconds of power, with 28,000 lumenseconds of output. The power is independently adjustable over a stepless 5 f-stop range from Full down to 1/32nd of the total power, in whole f-stop increments, and everywhere in between. This flashpower is independently adjusted on the back control panel, with a slide fader that shows marked f-stop increments. Utilizing advanced durability flash capacitors, coupled with axial-flow thermodynamics, the B1600 minimizes heat build-up, has increased overall durability, and shorter flash durations.