Condition: Used. Selling a classic Logitech TrackMan Wheel optical trackball mouse (Model: T-BB18 / P/N: 804360-1000). Popular, highly reliable wired USB version with signature red trackball. Ergonomic, saves desk space and reduces wrist strain. Condition: Pre-owned, tested, fully working. Trackball rolls smoothly. Connection: Standard wired USB (Windows/Mac). Serial Number: LZE43150960. Terms: Cash only. Pickup: Public meetup at Tim Hortons. Pickup in Cambridge, ON. Public meetup available. Cash. Meet at the Tim Hortons at Myers Road and Water Street — please note GPS may send you to the other end of Myers Road; you want the corner of Myers Road and Water Street.