1. Economy in electricity :it needs only 35w electric power and decrease 40 percent.2. Safe :when it met eith wrong ,the circuit of the ballast can off high voltage.3. High luminous :it is 3 times more luminous than the common lamp,higher,wideand farther make your car be safer.4. Good variable color temperature :4300-12000k.5. Long life:more than 3000 hours.6. Size complete:HID lamp are ideal for any lighting applications that can benefit from very high efficieny.7. Installation convenience:you only need attach HID bulb to original lamp hole,stick ballast and connect the source of electric power.Character1. water proof: be up to DIN40050 legal standard 2. Dust proof : be up to SAE J575 legal standard3. Shake proof : be up to DIN 40046 legal standard4. Operating ambient temperature range : -40-1055. High luminous :3200LM6. Long life :.Low voltage protection :when voltage of the battery is less than 9v,ballast will stop work to avoid HID bulb exhausting electric energy.7.Over voltage protection :when voltage of the battery is more than 18v for trouble of power supply system and battery ,ballast will stop work to prevent high voltage from burning bulb.8. More white more brightness:it provides driver good driving environment just like to lessen eyes tire by 3 times more brightness than ordinary lamp.9.Short circuit and broken circuit protection:when suddenness,short circuit and open circuit happen,ballast will switch off circuit in order to avoid getting a electric shocking or exploding oil box.