1) improved halogen lamp 2) base: H1 3) Color temperature:8500K 4) Application: fog, low beam, high ... :8500K10. Packing box: plastic box11. Warranty: 14 month12. other bases: H1, H3, H4, H7, H8, H9, H10, H11, H13, 9004(HB1 ... ), 9007(HB5)13. Other temperatures: 3500K, 5800k, 7500k, 8500k, etc. H1 8500K blue color plasma halogen bulb