I purchased this on Amazon and tried it once, but it doesn't suit me at all, so I'm selling it. Purchase date: 2025/7/22 I used it for about 2 minutes from then and have kept it stored in its box since. It's practically unused. Wired ELECOM DEFT PRO trackball, black and red design. - Brand: ELECOM - Model Name: DEFT PRO - Included items: User manual - Connectivity: Wired - Color: Black/Red Thank you for looking.