【SMOOTH & SENSITIVE TRACKBALL】 - Ideal for precise cursor control, this 40mm trackball mouse features high-sensitive 3-dot positioning technology. Move the cursor smoothly and accurately with thumb control, keeping your wrist and mouse in one place. Perfect for limited-space usage, it works flawlessly on a variety of surfaces including desks, legs, sofas, beds, and carpets.

【ERGONOMIC TILT DESIGN】 - With a technical 19° tilt angle and right-hand design, this trackball mouse is easily adapted for beginners. Maintain a natural wrist position, reducing muscle stress and wrist pain. Ideal for all-day use in activities such as drawing, typing, working, and playing, allowing your arm muscles and shoulder to relax.

【SILENT CLICKS & 4 DPI ADJUSTABLE】 - Choose from four cursor movement speeds: 600/800/1200/1600 DPI, ensuring accuracy and speed for different tasks. Instantly adjust DPI with the middle button. Experience noiseless clicks that are perfect for quiet environments like public gatherings, libraries, meetings, and even at night.

【PROGRAMMABLE WITH SOFTWARE】 - Customize your mouse with software. Download the SANWA Trackball mouse software to personalize your mouse buttons and enhance work efficiency (refer to the user manual for details). Note: This software is not compatible with Mac OS or Chrome OS. The programmable function requires the software to be active.

【VARIOUS COMPATIBLE DESIGN】 - This trackball mouse seamlessly works with a wide range of systems, including Windows (DOS/V), Mac, and Chrome OS. Compatible with Windows 11/10/8.1/8, macOS 12/11/10.12~10.15, and earlier versions, ensuring it integrates perfectly into your existing setup.