Bulbrite CF11MR16/GU10 11W 35W Equivalent Energy Efficient Compact Fluorescent Light Lasts up to 5 times longer than a Halogen MR16 (10,000 hours) GU10 Twist and Lock Base Great for track lighting, display lighting, and recessed cans Equivalent in light output to a 50W Halogen MR16 250 lumens