High power and super lighting h4/hb2/9003 automotive led headlight bulb 9000lm (4,500lms per bulb) 72w(36w each bulb) 6500k cool white light for imported csp led chips Great for conversion kit headlight safety driving at night. Far more than the halogen lamp and hid lamp. Get up to 30% more light on the road compared to a standard halogen headlight bulb , Works underwater , Shockproof, Solid-State, High Shock / Vibration Resistant LED drivers with over-heat protection Uses csp led chip, little illuminated surface but maximum light efficiency, better penetration and stronger condenser, waterproof and dustproof All-in-one, plug-n-play, smart heat radiator, instant start.Over 10000 hrs of brilliant continuous light ip68 rainproof driver housing and fan works even in extreme situations Cooling system: Aircraft aluminum profile. aviation standard aluminum lamp body anti-oxygen and high temperature resistance Built in fans control driver get optimal heat protection cooler faster 50% off than other auto headlight The latest technology to ensure a perfect beam pattern without any dark spots or foggy light