The Hamilton Buhl SC-150-4K is energy efficient Buhlite Softcube 150 watt Soft Light with 4200 Kelvin double ended ceramic metal halide lamp & 4 leaf barn door standard. This is a low efficient energy 150 watt low heat lamp. Constant color, no color shifts. 10,000 hour lamp. Portable, set up takes seconds and easily mounts to table top, stands or ceiling. Built in diffuser and barn door allows total light control. UL, CUL & CE.