... H4 bi xenon HID KITS: 1.High Reliability 2.Constant Power Output 3.High Efficiency 4,Long lifespan Features of HID kits:1 ... 2. Package include: Two HID lamps, two ballasts, installation accessories and installation manual and warranty card3. Bulb type: H1, H3,H4, H4 ... resistant9. Quality warranty: one-year limited warranty, and replace all damaged items free of charge according to our warranty card ...