Multitester tested for voltage. The ac POWER CORD is included (a $9.95 value for free). This is a genuine factory original BOSE adapter with an Input 100-240V AC andoutput:18VDC 1.0A(aka: 18vdc 1000mA). Amperage can be higher, but never lower. Very rare 4-pin holes connector. Please determine compatibility before looking. Questions are encouraged.S&H in the contiguous USA is $6.(insured shipping).Please see other interesting items by JGritUSPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 4 days of receiving cleared payment. How long it takes to deliver to your door is strictlywithinUSPS control and not within the control of seller. Please leave 5 stars for seller 4 day drop-off time. Thankyou.