Characteristic:High in luminous efficiency, long in service life. Good photochromism; color index Ra=65 Characteristic:High in luminous efficiency, long in service life. Good photochromism; color index Ra=65; color temperature :3200k and 4000k and 6000k.Application: Avalible for the stadium , exhibition center , supermarket, pleasure ground and street lighting 150w Metal Halide Lamps