the one i saw had the 35watt bulb in,there are bigger bulbs(50 and 75 watt) but they make the lamp even more expensive, its the reflector that gives ya the distance on ya beam so your not getting a longer beam just whiter which is good but worth all the extra cash i'm not sure,as anyone looked into how much these bulbs are cause there not something that pulls in and out like the old ones there a solid fixture,i would expect a replacement to cost a few quid.