1x 5W (=50W)LED GU10 Reflector Spot Light Bulb. GU10 2-p in Spotlight Fitting. Warm White (3000K). No more waiting for light bulbs to warm up, LED's do this instantly. LED light bulbs also use a lot less energy in comparison to their counterparts, switching over to LED light bulbs will save you money in the long run as they also last longer!
eBay