UpBright New DC 18V 12V 9V 7.5V 6V 5V Barrel Plug Power Cable Approx 6ft (1.8m) AC Adapter Extender Extension Cord Female Jack: 5.5mm x 2.1mm to Male Plug End: OD: 4.0mm ID: 1.7mm/1.5mm Tip Tested Units. In Great Working Condition. UpBright 30 days money back guarantee. 1 full year service warranty.