I have for sale a used Logitech Ergonomic Trackman Marble Mouse Gray USB Wired T-BC21This has been fully tested and working!All items come from a smoke free home. Please see all photos for all the details and defects if any. If you have any questions please feel free to ask!Payments: Payment is due 48 hours once you purchase or have a winning offer. If no payment is made within s timeframe an unpaid item case will be opened.Returns: I accept returns within 30 days as long as item is in same condition as received.If you have any other questions please feel free to ask, thanks!