This item is a used product that has been disassembled, maintained, and lightly cleaned. New stick sensors have been replaced. All buttons have been tested and confirmed to work, wireless connection confirmed, no drift, and no slide lock issues. 【Options】 +300 yen (per unit) for a new battery replacement. Please comment before purchasing as I will update the price and page. Please refrain from purchasing if you are sensitive to used items. New re-listing is possible (Yahoo! Flea Market), please feel free to comment. Please refrain from price negotiations via comments. The item will be carefully packaged and shipped via Yu-Packet Post (mini). ※※【Operation Guarantee】※※ Returns and refunds are available for initial operational defects. However, this is limited to those who can list and ship the item on Mercari or Yahoo! Flea Market for the return. Otherwise, please return the item at your expense (regular mail is acceptable). Returns are not accepted after confirmation of receipt.