Multitester tested for voltage. This is a voltage EQUIVALENT version ADAPTER for BOSE LifeStyle 12 powersupply with an Input: AC 120V (ordinary household wall outlet plug). Amperage can be higher, but never lower. Round barrel connector with a hollow center. Please check your device for power requirement. Photo is generic. Shape, size or color may differ from photo. Special heavy wrapping is provided to protect the prongs. S H in the contiguous USA is $6.(insured shipping). Please see other interesting items by JGrit. USPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 5 days of receiving cleared payment. How long it takes to deliver to your door is strictly within USPS control and not within the control of seller. Please leave 5 stars for seller 5 day drop-off time.