SONY Genuine AC-E5212 adapter, 5.2V. Power-on tested. This is the adapter that came with a Walkman speaker. SONY AC-E5212 AC Adapter 5.2V 1.25A Sony Center Plus Compatible models: NW-S784 NW-S785 NW-E083 NW-S764 NW-S765 NW-S774 NW-S775 Please note that I generally do not accept price negotiations to prevent purchases by third parties after a price reduction. I am also selling this on other flea market apps, so there is a possibility that it may already be out of stock. In that case, I apologize, but I will have to cancel the order. Also, due to differences in listing fees, there may be slight price differences compared to other flea market apps. If you wish to purchase this item together with other items I am selling, please contact me before purchasing. In that case, I will sell them as a set and offer a discount of the reduced shipping cost + 3% off the total amount.