Multitester tested for voltage. Plug-In wall mount AC-DC voltage EQUIVALENT to BOSS PSA adapter with AC input 120V (ordinary household wall outlet) and DC output: 9 volts DC 0.3 amps. Amperage could be higher but never lower. Round barrel connecter with a hollow NEGATIVE center. Please check your device power requirements to insure compatibility. Questions are encouraged. 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 $5.(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. Thankyou.