Light output in the monolights can be varied in 1/10-stop stages over a 4-stop range, accessible through the digital readout. The 100W modeling light can be coupled to the flash, getting brighter or dimmer to match the actual light output, or independently set to the level you want. The monolight accepts Bowens monolight reflectors and head accessories. It also has a limited Auto Dump function, firing the strobe when you reset to a different power level (so the strobe is automatically set to the correct setting for the next flash). A built-in optical slave allows the monolight to be triggered using another flash. The white umbrellas soften and broaden the light. The aluminum light stands lock with sure-twist section locks, and if you forget to tighten a section with your light mounted, the light comes down slowly, thanks to the air-cushioning. And the light stands will accept casters, which makes positioning the lights a snap.