【Set Contents】 ◯ DUO-R Box ◯ DUO-R Main Unit ◯ Controller ◯ AC Adapter 【Bonus Items】 ◯ Ys I & II ◯ Ys III ◯ Ys IV ◯ Power League ◯ Nectaris ◯ Appare! Gateball ◯ Space Harrier ◯ AV Cable [Description of Items Included in the Set] Operation has been confirmed. The items are all as listed above. The DUO-R main unit has undergone lens cleaning, pickup adjustment, partial solder repair, and gear grease-up maintenance. The backup capacitor has been replaced. (5.5v 0.047f → 5.5v 1.0f) ※ The backup capacitor (super capacitor) 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, please turn on the power for a few minutes about once a month. The data retention period is considerably longer than the original. The controller has been maintained using anhydrous ethanol and contact spray on the internal terminal parts. The cord is a little sticky, but operation has been confirmed. The DUO-R box has damage such as scratches, stains, tears, folds, and tape. Please consider it as a bonus item as the condition is poor. (The serial numbers of the DUO-R main unit and the box match) [Description of Bonus Items] Only Ys I & II and Power League have had their initial operation confirmed. There are damages such as scratches, stains, case cracks, and torn manuals. Accessories are missing. The AV cable has been tested and works, but there were times when the connection was slightly poor. When the connection is poor, adjusting the plug slightly will allow both video and audio to be output. Due to this condition, the AV cable is considered junk. ※ The bonus items are only bonus items, so there is no operational guarantee after purchase, and no compensation, returns, or refunds will be provided even if there are damages not mentioned in the description. ※ There is a possibility that the games may not start depending on the condition of the software you own. ※ Although this 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.