Features Specifications:Xenon Lamp H4/ S-H,HID headlight,auto lamp  Xenon Lamp H4/ S-H,HID headlight,auto lamp Function parameter 1) Power: 35W 2) Lumination:2500-- 3,500lm 3) Lifespan: 3000hours 4) Operating ambient temperature range: -40°C - +105°C 5) Color temperature: 3,000K30000k  6) Voltage: 85V±15V 7) wiring: high temperature-risitant, high voltage-resistant  8) Cover: crystal glass tube of UV-CAT anti-ultraviolet  9) Luminescence way: produced luminous by gases colliding Color temperature and color The color of bulb is expressed by color temperature: 3000kgolden  4300kyellow white 5000kshallow yellow 8000kblue white 10000kCambridge blue 15000kblue red 20000kpink 25000kmauve 30000k--purple How to choose  Different lamp apply to different auto models, the HID Xenon lamp is separated into the following types: H1H3H4H7H8H9H10H11H139004900590069007D2C/R/SD1C/R/SD4S . If you are not clear which type to use ,please check it in our website before purchasing or contact with our professional stuff for consulting service. Warm advice: please choose the HID Xenon lamp at the temperature below 6000k, and obey the traffic regulations !