Release date: November 2005 Ships on the same day or within 24 hours. Operation has been confirmed with my AC adapter. The gum battery did not respond. The included item is only the main unit, so please prepare an AC adapter (DC3V 500mA). There is one plastic chip, near the base of the lid. This is a used item, so please refrain from purchasing if you are concerned about future malfunctions or the current exterior scratches. Please refrain from purchasing if you are sensitive to such issues. I have other items for sale, so you can view them by tapping or clicking the hashtag: #ポイポイさんアイテム (PoiPoi's Items) (You can see a list.) Bundled purchases are welcome. If you purchase with other items, you will receive a 300 yen discount on the second item. I have a lot of items for sale, so If you are looking for similar items specifically, please see #ポイポイさん音楽 (PoiPoi's Music). Thank you. #Sony #CDPlayer #CDWalkman #DE730HeiseiRetro #MP3