TrackballsKensington Expert Mouse Wired Trackball K64325
A wired USB symmetrical trackball with a 55 mm ball, a scroll ring and 4 buttons, supplied with a detachable wrist rest.
~$87.65
Logitech ERGO M575
A right-handed, thumb-operated wireless trackball with a 35 mm ball that connects via USB receiver or Bluetooth LE and runs on one AA battery.
Key specs auto-matched against source pages · Last verified: 2026-10-17
~$49.99
Where to buy
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Pros
- Connects via USB receiver or Bluetooth Low Energy
- Compact footprint since the body stays still, suited to tight desks
- One AA battery lasts up to 18–20 months depending on connection
- Back/forward buttons and others can be customized in Logitech Options
Cons
- Scroll wheel has no tilt function
- Right-hand shape only, with no left-handed version
- Main clicks are audible (quiet clicks came with the later M575S)
- A reviewer notes the thumb can get sore after long use
Specs
| Handedness | Right |
|---|---|
| Ball size | 35 mm |
| Ball position | Thumb |
| Buttons | 5 |
| Scroll | Wheel |
| Weight | 145 g |
| Connectivity | Bluetooth, USB receiver |
| OS | windows, macos, linux, ios, chromeos |
| Released | 2020 |
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