Standard gu10 base, you can install them in a few seconds. 10X LED GU10 Light Bulbs 5W (Equals 40W Halogen Down Lamp) Warm Cool White Spotlight Energy Saving Bulb 120°, Non Dimmable. GU10 LED Light Bulbs to save over 90% of your electricity bill, the outstanding service life of up to 30,000 hours!