... than 50,000 h 4, 2 year warranty 2012 Up and down wall light led1, AC 220V ,50-60HZ2, Energy saving 90 ... that of conventional down lights.Circuit Design: Isolated circuit design with constant current, wide voltage range and frequency.It is not only safe ... LED thermal management technology from Japan.The light decay is very low and lifespan is above 50,000hours.Application places:high-class stores ...