Thank you for viewing. I am selling this mouse because I have multiple mice and haven't used this one much, so I think it's still perfectly usable. Thank you. Logitech Wireless Mouse Trackball Wireless M575OW Bluetooth Unifying 5-button Trackball Mouse Wireless Mouse windows mac iPad Battery life up to 24 months M575 Off-white Domestic genuine product Connectivity...Wired/Wireless (Bluetooth) Connectivity...Wireless (Bluetooth) Power...Battery-powered