Elecom DEFT Trackball

By Xah Lee. Date: . Last updated: .

This is new, from Japan. This product appeared around 2016.

This is one of the best trackball, for small to medium sized hands.

Elecom wireless trackball 1
Elecom M-DT2 trackball. 〔Wireless. Buy at amazon〕 〔Wired. Buy at amazon

It is very unique. It is just about the only trackball with index finger operated ball, with a scroll wheel (and for thumb), and with 8 buttons, and even a resolution/dpi switch!

〔►see Trackballs with Scroll Wheel

Video Review

Elecom M-DT2 Review


Elecom wireless trackball left side view
〔Wireless. Buy at amazon〕 〔Wired. Buy at amazon

Scroll Wheel with Tilt

The scroll wheel can be pressed as middle button, and can tilt to the sides.

Elecom wireless trackball top view 2
〔Wireless. Buy at amazon〕 〔Wired. Buy at amazon

Some reviewers said it's hard to press the scroll wheel, and also hard to tild up. You are likely to lift the mouse when you tilt it up.

Photo Gallery

Elecom DEFT trackball 16-s
〔image source imgur3840×2160
Elecom DEFT trackball 864-s
Beautiful starry ball. 〔image source imgur3840×2160

Size Comparison

Elecom deft trackball  logitech m570  Kensington Orbit Trackball 2016-04
Logitech M570 Wireless TrackballElecom DEFT TrackballKensington Orbit Trackball with Scroll Ring 〔photo by James M Mueller at image source

more Trackball Sizes Comparison

Ball Spin?

Spins about 1.5 seconds.

Work in Linux?

This works on Linux out of the box, except the 3 function buttons on top left.

You can remap mouse buttons the usual way. 〔►see Linux: How to Swap Mouse Buttons

Ball Size

Ball diameter is 34 mm.

Trackball Ball Sizes and Replacement


〔Wireless. Buy at amazon

〔Wired. Buy at amazon