Thank you for viewing. This is a "Panasonic RQ-SX55" [Used, Good Condition, Operation Not Confirmed]. It was in a cardboard box in storage. All accessories are included, but the nostalgic gum batteries are likely dead. I don't know if it will work with an external battery case. The exterior appears to be in good condition with no major scratches. It was sold at the end of the portable cassette player era, and the illuminated LCD (backlight) on the controller was a new and distinctive feature. KinKi Kids did a commercial for it back then. How about it as a restoration base or for your collection, rather than for practical use? If you want to reminisce about the good old days, please click to buy!