Power and Voltage: The D1S Xenon HID Car Headlight Bulbs are rated at 35W power and voltage is 12V DC.Material: These bulbs are made from high density aluminum alloy, ensuring durability and performance.Long Lifespan: With a working life of over 3000 hours, these Light Bulbs offer long term illumination for your vehicle's headlights.Weather Resistant: The Automotive Lightings have an IP67 waterproof rating, making them capable of withstanding harsh weather conditions while ensuring over 3500LM light output for broad visibility.Size: Each bulb measures approximately?1.57inchx1.57inchx3.15inch in size. Specification: 4cmx4cmx8cm/1.57inchx1.57inchx3.15inch Package Includes: 2?Headlight Bulbs Note: Please allow slightly errors 1-2cm differences due to manual measurement.