The Speedotron MW3QC Quartz Flashtube is UV-coated and can be used with all the latest version Speedotron flash heads and monolights.This flashtube can be easily plugged and unplugged into the socket of the flash headA yellow appearance is present in this UV-coated flashtube and it counteracts the excess blue 5700° or  higher output of other flashtubesWith the help of this UV coating, the color temperature can be reduced to 5500°, which is similar to the noon daylight color