This 5w LED 240v GU10 by BELL is equivalent to a 50w halogen spot lamp. It comes in warm white which is perfect for the home environment and also has a lumen output of 330 which is ideal for any standard household ceiling downlight. Average lamp life is 20,000 hours and is capable of 125,000 switch cycles. The CRI is 80 which means the colour will be consistent throughout its entire life. The product dimensions are H54mm x D50 which are ideal like for like replacement of a traditional halogen gu10. This LED is dimmable and requires a trailing edge dimming switch. Older traditional leading edge dimmers can be used, however the lamps are likely to buzz when dimmed. If you require a new trailing edge dimming switch, see related products below. BELL part code 05797.