I purchased this new on Amazon a year and a half ago. I used it for work, but there were periods when I used a different mouse, so the actual usage period is about six months. I threw away the box, so I will wrap it in bubble wrap for shipping. M575S Bluetooth Unifying 5-button Windows Mac iPad Battery life up to 24 months Black Domestic genuine product Ergonomic design wireless trackball mouse, providing comfortable operability. - Brand: Logitech - Type: Trackball - Connectivity: Wireless - Color: Black - Features: Ergonomic design Thank you for looking.