LED-Lamp GU10 3.3 W 230 lm 4000 K Good every day quality from a brand you can trust. RefLED Retro ES50 delivers a cost effective solution to replacing 35W halogen GU10 with LED offering 230lm of light while extending lamp life to 18,000 hours. Glass construction and a hlaogen look lens makes these lamps the idea choice for customer who want a low energy LED lamp but all in the guise of a halogen lamp. Featuring an element of backward light owed to its glass construction, these lamps are perfect for exposed spots. GU10 cap. 36 degree beam angle in cool white 4000K. Backed by a 3 year warranty.