Package Content:2 x H4 HID Bi-Xenon LightHID stands for High Intensity Discharge. HID lights are the brightest auto lights today. In HID lights， the filament is replaced by the Xenon gas.Main Color: Silver + BlackDimension: 275 x 25 mm/10.7 x 0.98 inch (L) x (D)( detailed size show in the picture)Power: 55WColor temperature: 6000KService life: up to 3000 hoursOperation position: horizontalAdvantages of HID Lamps:1. High brightness and low power consumption2. They are closer to natural daylight in color and light your way more effectively， more safety.3. You can see things more clearly in bad weather and at night.4. They are 300% brighter than halogen lamps.5. Suitable for motorbikes and cars6. High quality technology7.Short circuit protection8.Anti-electronic jamming9.Waterproof and vibration proofThe distance can be adjust 5.0 mm along the optical axis， transfer the upper beam and the low beam.