1pc H4 and 1pc Halogen Bulb,Super bright,Low power consumption,Over 3000hrs ,14month warranty, ... technical ballast. Function parameter1) Item Name: H4a HID Xenon Kits with Slim Ballast2) Hi/Low3) Lumen: 3000-- 3,500lm4) Available Voltage ... white10000k: Cambridge blue15000k: Blue red20000k: Pink25000k: Auve30000k: PurpleHow to chooseDifferent lamp apply to different auto models, If you are not clear ...