Amazon.com: X-keys L-Trac Red Trackball : Electronics
CST2545-5w L-Trac トラックボール www.eximo.pt
CST2545-5W(GL) (L-Trac Glow) USB Wired Ambidextrous High Performance Laser Ergonomic 5-Button Backlit Trackball (Black) - Made in the USA (51b62c5292fd4124ae052515ed3ceacf) - PCPartPicker