This 5 W MR16 spotlight bulb has a GU5.3 fitting , it is avaliable in warm white. b LED Spotlights are ideal replacements for halogen and filament bulb lighting with their low power and longer life can make you significant savings upto 85% in many cases . Advantages of LED spotlights: Performance Energy Saving Lifetime Flexibility Environmental Friendliness - lead and mercury free Instant start Radiation Friendly Equivalent to 50w halogen Comes with a 3 year warranty