... high quality bulb 3.Warranty: 18 months HID xenon kits, with slim ballast, HID kitLamp types:H1,H3,H4,H4,(L ... . Single-board structure with dual-core digital technology, refined circuit, perfectly controlled, intelligent ignition protection, overheat protection, overvoltage/low-voltage protection, open circuit/short circuit/ignition protection, high reliability ...