Logitech M570 Wireless Trackball Mouse – Ergonomic Design with Sculpted Right-Hand Shape, Compatible with Apple Mac / Microsoft, USB Unifying Receiver, Dark Gray (Discontinued by Manufacturer)
LOGITECH M570 WIRELESS TRACKBALL MOUSE WITH USB RECEIVER Tested Working | eBay
My Review of Logitech M570 Wireless Trackball - Can It Replace your Mouse?
My everyday rider: the Logitech M570. Though it works well and travels easy, it hardly lasts me a year without the ball chipping or something else breaking. Any advice for better mouse-care,