Multitester tested for voltage. This is an ORIGINAL Genuine Nokia FACTORY wall mountvoltage regulator, power supply, powersupply, inverter, adaptor.AC input 120V andDC output:3.7V 340mA.Round barrel connector with a 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 products 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.