5W GU10 LED Lamp 4000k Cool White Kosnic RE05-GUF40   Save energy by up to 90% Replacement for halogen GU10 lamps Long life of 25,000h   The Kosnic RE05-GUF40 is a 5W GU10 LED Lamp with a color temperature of 4000k Cool White. This energy-saving lamp can save up to 90% of energy compared to halogen GU10 lamps, while also having a long lifespan of 25,000 hours. Make the switch and enjoy both cost savings and longevity.