Interior LED replacement bulb used in bi-pin halogen fixtures. Lasts 60 times longer than the G4 it replaces and is 455% more energy efficient (draws 183 milliamps). Design allows the bulb to be easily placed inside any side pin fixture, whether at a 10 degree angle, or straight in. Patent Pending state of the art copper heat dissipation apparatus helps the unit stay cool. FCC approved - will not interfere with radio/analog signals.