Elecom DEFT Pro Trackball

By Xah Lee. Date: . Last updated: .

This came out in 2018-05, and is one of the best trackball.

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Buy Deft Pro Trackball Model number M-DPT1MRXBK

The left click button is actually on the thumb.

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deft pro trackball buttons

Buy Deft Pro Trackball

High Grade Tracking, Adjustable DPI

It uses modern (2018) tracking tech. So, not like many trackballs that's using 10 years old optics that's super slow.

Ball Spins?

Some people say this trackball has the most smooth spin, while many amazon reviews says it's the worst. I guess it depends on your luck.

Watch at 10:30 to see spin.
Elecom Deft Pro M-DPT1MRXBK trackball / mouse/ Unboxing Review comparison
May 19, 2018
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Ball Size

Ball diameter is 44 mm.

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Trackball Ball Sizes and Replacement

Size Comparison

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Trackball Size Comparison

Work in Linux?

Yes. Plug and play.

Linux kernel dated after 2019-05-30 supports the Fn1 Fn2 Fn3 buttons.

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linux kernel patch for elecom trackball
source https://github.com/torvalds/linux/blob/master/drivers/hid/hid-elecom.c

You can remap mouse buttons in Linux using xinput. [see Linux: How to Swap Mouse Buttons]

My Conclusion

It's good. Good reviews on amazon.

I'd rate this or the Logitech MX Ergo Trackball as best trackballs.

Buy at amazon

Elecom Trackball Series

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Elecom Bitra Finger TrackballElecom DEFT TrackballElecom DEFT Pro TrackballElecom HUGE Trackball [image source https://twitter.com/nekotrackball/status/1373314845731266560]