Gu10 par16 5 5w led reflector bulb superstar dimmable osram this led light bulb with a gu10 socket convinces with a great look professional thermal management and the possibility to dim with most conventional dimmers the bulb can be used in place of a conventional 50 w high voltage halogen reflector bulb and significantly decreases energy consumption characteristics extremely low power consumption very long lifespan up to 25 000 hours insensitive to shock no uv