The Joker-Bug 400 combines the characteristics of the BUG-LITE 400, a 400 Watt daylight HMI system without optics, with those of the JOKER 400, a PAR 46 fixture using a specular parabolic reflector and a set of 4 lenses. The JOKER-BUG 400 is comparable to a 1500/2000Wquartz fixture but with a power draw of only 5.5 Amps.

The JOKER-BUG 400 is delivered with a Clear Glass Beaker when reaching for full intensity is important, and a Frosted Glass Beaker when light quality is the prime concern. The 400W MSR lamp was selected for its size/weight and the sizes/weights of the 
components needed to operate it. The MSR lamp with its GZZ 9.5 base is considerably smaller than the next traditional Wattage, the 575 (G22 base); this in turn allows for more compact and shorter fixture design. The shorter arc gap of the 400 makes up for the difference of output between 400 and 575 and the lower Wattage does not require forced air cooling of the power supply.