Specifications:1) Power: 35W2) Voltage: 12V or 24V3) Efficiency: 95%4) High lumination: 3,500 Lm5) Long life: 10 times longer than ordinary halogen lamps, about 3,000 - 5,000 hours6) Operating ambient temperature range: -20 ~ +85oC7) Low voltage protection: when voltage of the battery is less than 9V, ballast will stop working to avoid HID bulb exhausting electric energy8) Over-voltage protection: when voltage of the battery is more than 16V for trouble of power supply system and battery, ballast will stop working to prevent high voltage from burning bulb9) Waterproof: up to DIN400500 legal standard10) Anti-dust: up to SAE J575 legal standard11) Shockproof: up to DIN40056 legal standard producing area:China