These Non-Dimmable, Silver Finish Energizer® LED GU10 HIGHTECH Bulbs replicate traditional halogen bulbs in appearance and output, whilst offering an 85% energy saving versus their halogen equivalent. The bulbs are a true retro fit design, provide instant, flicker-free light and have an average rated life of 25,000 hours.This Energizer® LED GU10 HIGHTECH Non-Dimmable Bulb has the following specification: Fitting: GU10Input Wattage: 4.2W (50W equivalent)Lumens of Light: 345 lmSwitching Cycles: 40,000Beam: 36°Average Rated Life: 25,000 hoursColour Temperature: 3,000K (Warm White)Lamp Dimensions: 50 x 54mmDimmable: NoRated: F Ref: UTTK14540