... 1, AC 220V ,50-60HZ 2, Energy saving 90% 3, Life time more than 50,000 hours ... ),no damage with frequent switching and energy saving 90% than that of conventional down lights.Circuit Design ... small measurement with high efficiency and high power factor.Long lifespan: Introduces the advances LED thermal management ... for LED down light series: Energy saving 90% LED down light, ceiling down light with high ...