CGC Ultralux IP65 LED Bulkhead with CCT Colour Temperature and Power Output Switchable Functions This round LED bulkhead offers an aesthetically pleasing design whilst being packed with features to make it one of the most versatile LED bulkheads around. It features an internal switch to select between 3000k (warm white) 4000k (natural white), 6000k (cool white) colour temperatures. A second internal switch allows the power and lumen output to be switched across four settings ranging from 10W/1200lm to 16W/1920lm - CGC Lighting Ultralux IP65 LED Bulkhead with CCT Colour Temperature & Power Output Switchable Functions in White