400 Watt LED Strobe. Four COB LEDs. Powercon Daisy Chaining. 3 and 5 Pin Daisy Chaining. The Atomic Pro K4 is an 400 watt COB LED Strobe- perfect for fixed and mobile applications. The K4 uses robust electronics suitable for the most demanding applications and offers 4 ultra bright- super powered 100 watt LEDs- all of which bounce off of a huge reflector adding to the spread of the light creating a real show-stopping effect. The digital display is easy to navigate- but to get the best out of this light DMX is recommended. Each LED can be controlled independently- so strobe chases can be produced easily.