1.HID Ballast , Competitive price 2.Defective rate: <0.5% 3.More stable ... range: -40~105'CWarranty: 18 monthsRegular ballst(AC CPU digital ballast) Weight: 288gSize: 83.5*72.0*29.4mm No ... working life of the lamp, eliminate bulbs chromatism cause by ballast. Input voltage changes, tube voltage changes, temperature changes are ... the accuracy of the constant power is ±3%. Normal 35W xenon 12v ballast