... .High quality LED par light,Europa Standard and US standard,CE&RoHS certificate3) long lifetime,5% attenuation after 1000 hours, ... and voltage constant current circuit which supplies stable output current.8 Water clear non-distortion acryl optical lens.9)3 years ... effciency Long lifespan >50,000 hours Working temperature -30-+50 CE& Rohs Application: Home, shop, window, mall, hotel, exhibition hall, ...