Pair of H13 12000K Purple High/Low Beam HID Xenon Conversion Light Bulbs+Thick Ballasts 3 Times Brighter than Conventional Halogen Bulbs / Last 10 Times Longer than Stock Bulbs 35% Less Power Consumption: thus Generating Much Less Heat during Operation 35W (+/- 1W) Bulb Output, AC 9V - 16V Power Input Voltage (Vehicle Standard) Heavy Duty Working Temperature: -40 F to 221 F (-40 C to 105 C) Ballast with High 155 Watt Output for Wide Distribution of Light