paul russells LED Bulb GU10, 400 lumens, 4.9W(Equivalent to 50W Halogen), Cool White 4000K, Non Dimmable, Pack of 20

4.9W REPLACES A 50W SPOTLIGHT: Each bulb delivers 450 lumens, matching the light output of the 50W spotlight it replaces while drawing around a tenth of the power. Fits any standard GU10 holder, so no rewiring or adaptors are needed. LONG LASTING & NON-DIMMABLE: A durable GU10 led bulb using 90% less electricity than a 50w spotlight. Runs from 220-240v 50/60hz mains, no driver or transformer needed. Not for dimmer circuits, which cause flickering and shorten bulb life. COOL WHITE 4000K: A crisp, neutral white that keeps kitchens, bathrooms and offices looking clean and bright rather than yellow. Every bulb holds the same colour tone, so a full ceiling of spotlights lights evenly throughout. ROOM-WIDE CLARITY AND FOCUS: A 100 degree wide beam fills your ceiling spotlights with bright, even light, ideal for kitchen, living room, bedroom, office, restaurant, hotel, track light and recessed down-light fittings. LONG LIFE & PEACE OF MIND: Built for durability with a lifespan of up to 15,000 hours, reducing how often you replace them. Every bulb is tested before it ships, backed by a 36-month replacement guarantee and any question answered within 24 hours.