V31 D SERIES LED has 55 watts 6000 lumens per bulb, 100% compatible with factory HID ballast, 100% plug and play. With intelligent temperature control system, 15 beads LED chipset light source, copper substrated and 3x vacuum copper tubes for heat transmission, full 6063 aluminum alloy body and 12000 rpm high speed turbin fan for heat dissipation, ensure the LED bulb works safely.