Kensington SlimBlade Pro EQ Purchased on Amazon on August 3, 2025 for 16,500 yen. Used for only a few minutes. There are no initial defects with the buttons, dents in the trackball, or scratches on the main body. I am selling this because the external mouse software (X-Mouse Button Control) conflicted with the pen tablet driver during customization. [Bonus] ① uxcell 2mm Ceramic Bearing Ball ZrO2 Zirconium Oxide Ball G5 Precision, 10 pieces 637 yen. Replacement support balls for the Slimblade. ② Bonanza Bonanza One-Touch 50g 991 yen. A coating agent that improves the smoothness of the trackball when applied. I purchased it at the same time as the mouse and used 3 drops, but there is still plenty left. Total 18,128 yen → 15,000 yen I am not considering a price reduction at this time. Also, if I find a non-conflicting method other than X-Mouse, I may cancel the listing without notice. If you have any other questions, please ask in the comments section.