Black Line 05 Series PacksDesigned for location, these packs all provide true power output ratioing, variable dial-down power and model lamp intensity. Electronics engineered for reliability and safety on location shoots are housed in a dust-proof and compact sealed case.The 1205CX may be the perfect traveling pack. It delivers a very useful 1200w/s of power. It has true power output ratioing, variable dial-down power and model lamp intensity, and four quick-release light unit outlets. There are 189 output level variations available to match the needs of almost any shooting situation.