There are 2 versions of this, one has a single light source and is 5500K the other can a bi colour one that can change continuously from 3000K - 5500K. They put out more light than many panel lights and it is the wattage output figure that lets you know the light output. Comes with a mains power supply and a D-TAPB cable allowing you to put a suitable battery 13-18v DC to operate the unit. Exposures Bi Colour unit 1 metre away 50th sec, ISO 320, f4.5 Single |Colour unit 1 metre away 50th sec, ISO 320, f7.1 ▶ Check out my gear on Kit: https://kit.co/micso36