As part of the plus series of led panels the k4000s plus bi colour leds by fv provide consistent colour rendering and accurate colour temperature with 150k variation or less in colour temperature the 400 leds produce a bright beam of light at a 60 degree beam angle and are equally split between daylight balanced and tungsten balanced leds making this 3 light kit ideal for use both in the studio and on location built into each panel is an extension port that can be used to install the sm