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 GU10 Input Wattage 4.2W (50W equivalent) Lumens of Light 345 lm Switching Cycles 40,000 Beam 36 Average Rated Life 25,000 hours Colour Temperature 3,000K (Warm White) Lamp Dimensions 50 x 54mm Dimmable No Rated F