Logitech M570 Wireless Trackball
This is came out in .
This is a improvement over Logitech's previous Logitech Trackman Wheel.
- A scroll wheel! Excellent.
- 2 extra programable buttons. (used for example for next/previous page history for browser) This is extremely convenient.
- Laser tracking tech. (No need to clean the ball anymore.)
- Thumbnail sized USB receiver.
Overall, it got positive reviews. However, compared to the classic Logitech Trackman Wheel (red ball) , the ball is a bit smaller and is a little more stiff to spin. This is also twice as expensive.
Logitech Wireless Trackball M570 Ball Size
The ball diameter is 34 mm.
For replacement, you can buy at amazon
If you want a WIRELESS trackball, you don't have much alternatives.
There's Elecom Wireless Trackball Mouse. See Best Trackballs
There's Kensington Orbit Wireless Trackball, but it isn't as good.