35W 9004 hid ballast 1, stable performance 2, high brightness 3, ... range: -40~105'CWarranty: 18 monthsRegular ballst(AC CPU digital ballast) Weight: 254gSize: 74.3*64.0*15. ... life of the lamp, eliminate bulbs chromatism cause by ballast. Input voltage changes, tube voltage changes, temperature changes ... details as below, to get an accurate price:* HID ballast model, you can get it at the end of ...