【Set Contents】 ◯ DUO-R Main Unit ◯ AC Adapter 【Extras】 ◯ Arcade Pad (Controller) ◯ Dragon Knight II ◯ Sengoku Mahjong ◯ AV Cable [Description of Items Included in the Set] Operation confirmed. All items are as listed above. The DUO-R main unit has been lens cleaned, pickup adjusted, partially solder repaired, and gear greased. It is a maintained item. The backup capacitor has been replaced. (5.5v 0.047f → 5.5v 1.0f) ※ The backup capacitor (supercapacitor) is for save data power. It has been replaced with a new one with a larger capacity than the original. ※ Due to the original specifications, save data may be lost if the power is not turned on for a long period of time. To preserve save data, turn on the power for a few minutes every two months or so. The data retention period is considerably longer than the original. The AC adapter is a new (compatible) product and has been used for multiple operation checks. ※ Please connect it firmly to the main unit. [Description of Extras] The controller's internal terminal section has been maintained using anhydrous ethanol and contact spray. ※ Currently, I do not have any software that uses six buttons, so I have not confirmed the operation of the III, IV, V, and VI buttons. Therefore, please consider the controller as junk. The software used for operation checks is also included as an extra. The software has been checked for initial operation. There are damages such as scratches and dirt. Accessories are missing. The AV cable has slightly poor contact. The image and sound will be output by fine-tuning the plug. Due to this condition, please consider the AV cable as junk. ※ If you are concerned about using it, please prepare a working AV cable yourself. ※ The extras are just extras, so there is no operational guarantee after purchase, and no compensation, returns, or refunds will be provided even if there are damages not mentioned. ※ There is a possibility that it will not start depending on the condition of the software you own. ※ Although it is a maintained product, it is a very old product, so there is no operational guarantee after purchase. Returns, refunds, and transaction cancellations are not possible. Please purchase only if you can agree to this. ※ Discounts are only possible for multiple purchases, and the discount will be the amount of the shipping cost that can be saved by combining the items.