... and exllent performance,HID kit2)Built in high quality digital ballast,CPU control3)High brightess,easy start up and ... good condensing effect. 4. Single-board structure with dual-core digital technology, refined circuit, perfectly controlled, intelligent ignition protection, ... pairs of bulbs, 4p* ballasts, 1pc *special connection cable, 2pcs * gift boxes, 1* manual, 1* warranty card.3.for moving bulb ...