Adesso Trackball T50

By Xah Lee. Date: 2019-02-01. Last updated: 2024-01-08.

Adesso trackball, iMouse T50, came out in October, 2018.

USB Wireless (2.4 GHz)
Feature front legs so the surface of the trackball can be flat, for ergonomic reasons.
Buttons are programmable. Requires Adesso software.
5 levels of DPI (400 to 4800).

Marketing Blurb

Ergonomic contour design - Minimizes pain and discomfort in forearm muscles from twisting which can cause carpal tunnel syndrome
Built-in 2″ large trackball with optical sensor - accurately and precisely tracks with less muscle movement for maximum comfort
East to install programmable driver - friendly user interface that lets you change button assignments DPI sensitivity scrolling speed
Removable trackball - Can Be easily removed by pushing the trackball from underneath the mouse
Adjustable DPI switch - adjustable cursor moving speed from 400-4 800 DPI
Connectivity Technology: Wireless Usb

Note : In case of Wireless mouse, the USB receiver will be provided inside or along with the mouse

Ball diameter: 50.8 mm

Lots of bad reviews on amazon. I'd recommend buying other trackball.