Adapter and Canbus Adapter: Our bulbs are stardand connectors, please buy the adapters in our store if your car need adapters.((some of cars use H7 Led may need extra adapters)) Canbus: Error Free for 95% Cars. ((Not fit to special cars, for example: not for Germany cars, not for Volvo, not for Seat, not for Scania and so on...) ) So for most of the cars, dont need to buy external canbus . Click the Following picture to get H7 canbus Warning Canceller Feature: Upgrade LED headlights, more focused. Increase the quantity of LED lamp beads, 30% brighter than before. Adopt integrated molding lamp body, better structure than before. Built-in drive, intelligent temperature control system. Non-polarity, plug and play, more easy installation. IP68 rated waterproof and dustproof. Super long lifespan up to 100,000 hours. Specifications: LED Chips: Newest Cree-Tec Chips Color Temperature: 6500K White Voltage(V): DC 9V-32V Working temperature: -40Celsius~+80Celsius Beam Angle: 360° Waterproof Level: IP68 Material: Aviation Aluminium 6063 Super Long Service Life:more than 100,000 Hours