The Kensington SlimBlade Pro trackball offers comfortable operation and precise control. - Brand: Kensington - Model Name: SlimBlade Pro - Type: Trackball - Compatibility: Windows, macOS Thank you for viewing. Connection type: 3 types - wired (USB) / wireless (USB) / Bluetooth Power: Rechargeable for wireless use, supplied via USB for wired use It cost around 12,000 yen when purchased. I used it for about a year, and although there is some wear and tear, I think it's in good condition. There were no particular problems during use. As shown in the photos, the included USB cable and USB wireless connector are complete.