The Eternaleds Halogen Twist 48-LED (GU10) Light Bulb uses 2W to put out as much light as a 20W incandescent spotlight (or 15W halogen) while lasting 18x longer. It is a drop-in replacement that can instantly replace GU10 halogen bulbs typically used in track or recessed lighting.
The Halogen Twist 48-LED is great in areas where you're using GU-10 halogen bulbs for accent lighting. It is not as bright as a halogen bulb overall since it uses 48 high brightness LED's focused at a tight 20 degree beam to give you light exactly where you want it.
Unlike halogen bulbs, the Halogen Twist 48-LED runs cool and lasts about 25x longer!
Notice how the 2W 48-LED bulb doesn't throw as wide a beam as the 20W MR16 but still gives a nice effect and still works well for accent lighting.