... 4. 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. Packing information:Box size: 33 ... manual, 1* warranty card. HID Xenon Kit with High quality Competitive Price 4300k 6000k 8000k or more