This was my own device that I opened but never used. The window for returning it had passed, so it's just been sitting in a drawer.

Logitech Trackman M570 wireless trackball mouse offers an ergonomic design that keeps your hand and arm relaxed during long work sessions. This thumb-controlled trackball stays in one place, making it ideal for tight workspaces or uneven surfaces. It features precise laser tracking, customizable back and forward buttons for easy navigation, and a long-lasting battery life powered by a single AA battery. The included Logitech Unifying receiver provides a reliable wireless connection and allows you to add other compatible devices.

Brand: Logitech
Model: Trackman M570
Type: Trackball Mouse
Connectivity: Wireless (2.4GHz)
Receiver: Logitech Unifying Receiver
Tracking Method: Laser
Buttons: 5 (including back/forward)
Power Source: 1 AA Battery
Color: Graphite / Blue
Compatibility: Windows, macOS, Chrome OS

Keywords: Ergonomic, Thumb Control, Office, Productivity, Computing, Peripheral, Graphite, Blue Ball, T-R0001, 810-001807, Wireless Mouse, Laser Tracking