Interfit INT499 150w Modelling Lamp Description. P150w Modelling Lamp for Stellar Stellar X Stellar XD Stellar Xtreme 150w or 300w Headsbr Long life lamp more than 8000hrs Colour Temp 3200k. p PSTRONGCare should be taken when screwing these bulbs into the head as with any Halogen bulb avoid getting greasy fingerprints onto the glass as this will cause hotspots on the glass when in operation & will decrease its lifespan dramatically STRONG. br p