Logitech M570 Ergonomic Wireless Trackball Mouse & Dongle usb Receiver, not shown in the pictures but it in the battery compartment .

This wireless trackball mouse provides ergonomic support by allowing the cursor to be controlled with the thumb. It is designed for use on various surfaces where traditional mice may not function effectively.

• Brand: Logitech
• Model: M570
• Connectivity: Wireless USB Receiver
• Tracking Method: Trackball
• Color: Gray / Blue
• Release Year: 2010

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