Adesso iMouse T50 Wireless Programmable Ergonomic Trackball Mouse

Wireless Technology
Works up to 30 feet of wireless distance. Operates on 12 different channels, each with 65,536 different IDs.
Ergonomic Contour Design
Minimizes forearm muscles from twisting and pains from Carpal Tunnel Syndrome.
Built-in 1.5″ (40mm) Trackball with Optical Sensor
Tracks accurately and precisely with less muscle movement for maximum comfort.
Back/Forward Buttons
Provides extra convenience for web surfing.
Removable Trackball
Allows for easy cleaning.
Adjustable DPI Switch
Adjustable cursor moving speed from 400-4,800 DPI.
Programmable Driver
The programmable driver has a friendly user interface that lets you change lighting options, different button assignments, DPI Sensitivity, and macros to each of the buttons.
Your Ai Companion
The programmable driver has a friendly user interface that lets you assign a button as CoPilot AI hotkey.