Trackballs: The few

Strengths:

- Wireless up to 10 meters.
- Strong software available for further mouse customization.
- Solid scroll wheel and clicks.
- Smaller, seemingly more durable than its predecessor the Logitech Trackman Wheel.
- An additional two button (5 in total) over the previously mentioned Trackman.
-Superb battery life.
-Unifying receiver that works with the M570 and other Logitech devices.
-Not your typical mouse

Weaknesses:

-Small ball ejection hole, giving some difficulty in removing it for cleaning.
-May require some wearing in before trackball will move seamlessly.
-Very tiny very fragile USB receiver.
-Requires light upkeep for keeping the trackball clear of debris.

Summary:

Reliable device with limited drawbacks. With limited choices in trackball technology the M570 becomes the new standard and certainly houses the improvements to do so. Consumers familiar with trackball technology will enjoy this while newer ones will want to take time to adjust.