Multitester tested for voltage. Input: 120V Output: 10V DC 0.85A. Round barrel connector with hollow center. Converter, voltage regulator, transformer, adapter, adaptor Model no. and Part number MK2103. 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.