This 12 volt AC power adapter is a replacement part for use with the Spectra S1, Spectra S2 and the Spectra 9 Plus. It is compatible with US outlets. This plug has detachable prongs. If you are going to another country our S2, S1, and 9 Plus are international compatible at 100-240 voltage and 50/60Hz, so you would only need the plug converter for the country you are going to as it is international compatible. The Output for the S2, S1, and 9 Plus is 12V, 2A.,Important Note: This power adapter is only compatible with pumps that have a manufacturing date of 02/2015 and onward. If you are not sure whether this adapter will be suitable for you or you would like us to double check, please reach out to Spectra Baby USA.,Spectra Baby USA is a top leading breast pump company offering moms the latest innovative breast pumps and supplies.,Spectra Baby USA is a team of lactation consultants and pumping mamas that take this journey very seriously. They want to help provide moms all around the world access to a good quality pump to provide breast milk for their babies.