【Discontinued】Logicool Logitech T-BC21 Trackball Mouse Wired Gray/Red Ball Thank you for viewing. This is the popular, now discontinued, symmetrical trackball mouse "Logicool (Logitech) T-BC21". With its simple design and high operability, it still enjoys strong popularity today. Product Details Brand: Logicool (Logitech) Model Number: T-BC21 Type: Trackball Mouse (Symmetrical) Connection Method: USB Wired Body Color: Gray Ball Color: Red (with glossy dots) Condition: Please check the photos. Operation confirmed. Accessories: Body only (no box), will be carefully packaged and shipped. About the product After purchasing new, it was stored with little use. There are no noticeable scratches or stains, and it is in overall clean condition. Recommended for those looking for a rare model. My sister is selling these items to organize her belongings for her move. Please take a look at the other items I have listed, lol. Please refrain from purchasing if you are seeking new-quality condition or are overly sensitive. Thank you for viewing.