... 10) 50% more fuel-efficient electricityBulb sizes available:Single beam Bulb: H1, H3, H4-1, H7, H8, H9, H10, H11, H13 ... H): H4-2, H13-2, 9004-2, 9007-2H/L Telescopic Bulb: H4-3, H13-3, 9004-3, 9007-3H/L Bi ... -xenon Dual Bulb: H4-4, H13-4, 9004-4, 9007-4Color temperature:3000K ...