Xenon bulbs() Lamp-chimney material: UV-CUT resist ultraviolet radiation quartz glass Principium: Shine through the ionization of the gas Color temper ature: 3000K,4300K,5000K,6000K,8000K,10000K,12000K,14000K,15000K,Pink color,green color,purple color,golden color Luminosity:3200lm Lifespan:3000hr Strict eight items testing of bullbat HID capacity: 1.High/low temperature testing ; 2.IEC 68-2-6 tremor testing; 3.EN60529 waterproof and dustproof testing 4.DIN antisepsis testing ; 5.Insant high/low voltage testing; 6.1000 times /one minute open circuit testing ; 7.EMC CISPK22 guard against hertzian waves.