The Elinchrom Modeling Lamp 100W (230V) is an E 27 base bulb with an average life of 500 hours and a color temperature of approximately 3200K. It is compatible with heads such as the EL 250, 250 S, 500, 500 S, 22, 23, 66, S, T, Box Lite, Style 300 / 600, Style FX 100 / 400, MiniLite or any other fixture which matches the rated voltage and has an E27 base.