Multitester tested for voltage. Power supply voltage EQUIVALENT to Shun Shing brand adapter for many small device power needs with AC input 120VAC and DC output: 6.0 volt and 400mA. (aka: 6vdc 0.4A). Amperage can be higher, but never lower. Please check your device for electrical requirements. Shape, size or color may differ from photo. Round barrel connector with a hollow POSITIVE center. Special heavy wrapping is provided to protect the prongs. S H in the contiguous USA is $4.(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 4 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 4 day drop-off time. Thankyou.