MyVolts 18V in-car Power Supply Adaptor Compatible with AMT Bulava Preamp This 18V high-quality in-car power adaptor serves as a replacement in-car adaptor for the AMT Bulava Preamp Package Includes:- 5V in-car power supply, - USB 18V power supply adaptor, Suitable for 12V or 24V vehicles - cars, campervans, and caravans Warranty - 1 year from date of purchase