... :1) With magnetic control unit inside, making bulb tube move in and out to creat high and low beam2) UV cut ... glass for headlight protection3) Waterproof and vibration resistant4) Color temperature: 3000K- 25000K5 ... following : 10 years HID factory ,Best And competitive HID xenon kit in market ,HID kit H1,H7,H11,9005,9006