TSUJ Wired Ergonomic Trackball Mouse 34mm 600/800/1200/1600 DPI Silent Buttons

Wired Trackball for Desk and Sofa Use

The TSUJ wired ergonomic trackball uses a 34mm thumb-controlled ball so the cursor moves without sliding the device across a surface. It works on a desk, a sofa or a lap, keeping the hand in one place. The vertical shape puts the wrist and arm in a neutral posture to reduce muscle tension. No driver installation is required on supported systems.

Silent Clicks and Adjustable Sensitivity

Left and right buttons use noiseless switches suited to quiet environments such as libraries, hospitals or late-night work. Sensitivity cycles through four fixed steps of 600, 800, 1200 and 1600 DPI, with the current level shown by a flash count when the switch button is pressed. Power comes from the USB cable so there is no battery to charge or replace.

Replaces a Conventional Mouse for Static Setups

This trackball replaces a standard mouse where desk space is limited or where moving a mouse causes discomfort. The jump is worth it for users who want stationary cursor control on irregular surfaces and silent clicks in shared spaces. It is not for buyers who need wireless freedom, more than four DPI steps, or full macOS feature parity.