Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your SANWA GMATB39 Wired Ergonomic Trackball Mouse. Please read this manual thoroughly before using the product to ensure proper functionality and to maximize your user experience.
The SANWA GMATB39 is designed for comfort and precision, featuring a 40mm trackball, silent buttons, and adjustable DPI settings. Its ergonomic design aims to reduce wrist strain and improve productivity.
Package Contents
- SANWA GMATB39 Wired Ergonomic Trackball Mouse
- User Manual
Setup
Connecting the Mouse
- Locate an available USB-A port on your computer.
- Plug the USB connector of the SANWA GMATB39 mouse into the USB-A port.
- The mouse is plug-and-play and should be recognized automatically by your operating system. No additional drivers are typically required for basic functionality.

Image: The SANWA GMATB39 Wired Ergonomic Trackball Mouse, ready for connection.
Operating Instructions
Basic Functions
- Trackball: Use your thumb to control the 40mm trackball for cursor movement. This design allows for precise navigation with minimal hand movement, reducing wrist strain.
- Left Button: Standard left-click function.
- Right Button: Standard right-click function.
- Scroll Wheel: Scroll up or down through documents and web pages.

Image: Product diagram highlighting the Left/Right Button, Scroll Wheel, DPI Switch Button, and Trackball.
DPI Adjustment
The mouse supports four levels of cursor movement speed (DPI): 600, 800, 1200, and 1600. This allows you to adjust the sensitivity to suit different tasks and preferences.
- To change the DPI setting, press the dedicated DPI Switch Button located near the scroll wheel. Each press cycles through the available DPI levels.

Image: Visual representation of the four DPI settings and the DPI switch button.
Programmable Buttons
The SANWA GMATB39 features programmable buttons, allowing you to customize functions for increased work efficiency.
- To utilize this feature, download the SANWA Trackball mouse software. Refer to the official SANWA website for the software download link.
- Note: The software is compatible with Windows operating systems only and does not work with Mac OS or Chrome OS. Programmable functions are active only when the software is running.

Image: Software interface for customizing mouse buttons.
Ergonomic Design
The mouse features a 19° ergonomic tilt angle and a right-hand design, promoting a natural wrist position. This design helps to alleviate muscle stress, wrist pain, RSI, and carpal tunnel syndrome during prolonged use.

Image: Illustration of the ergonomic tilt design reducing wrist fatigue.
Silent Clicks
The left and right buttons are designed for noiseless clicks, making the mouse suitable for use in quiet environments such as libraries, meeting rooms, or during late-night work sessions.

Image: Demonstrating the silent click feature in a quiet work environment.
Maintenance
Cleaning the Trackball
Over time, dust and debris can accumulate around the trackball, affecting its smooth operation. Regular cleaning is recommended.
- Gently remove the trackball from its housing.
- Use a soft, lint-free cloth to wipe the trackball clean.
- Clean the inside of the trackball housing, paying attention to the optical sensors and support rollers, using a cotton swab or compressed air.
- Reinsert the trackball into its housing.
General Cleaning
Wipe the exterior of the mouse with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners.
Troubleshooting
| Problem | Solution |
|---|---|
| Cursor does not move or moves erratically. |
|
| Buttons are not responding. |
|
| DPI adjustment is not working. |
|
Specifications
| Brand | SANWA |
| Model Number | GMATB39 |
| Connectivity Technology | USB |
| Movement Detection Technology | Trackball (Optical) |
| Trackball Size | 40mm |
| DPI Settings | 600 / 800 / 1200 / 1600 |
| Special Feature | Soundless Buttons |
| Button Quantity | 3 (Left, Right, DPI Switch) |
| Hand Orientation | Right |
| Compatible Devices | Computers with Windows (DOS/V), Mac, and Chrome OS systems with a USB-A port. |
| Operating System Compatibility | Windows 11/10/8.1/87, macOS 12/11/10.12~10.15, Chrome OS |
| Power Source | Corded Electric (USB) |
| Item Weight | 181 Grams |
| Enclosure Material | Plastic |
Official Product Video
Video: An overview of the SANWA Ergonomic Programmable Silent Buttons Trackball Mouse, demonstrating its features and ergonomic design.
Warranty and Support
All SANWA products are backed by a 1-Year Worry-Free Manufacturer Warranty and free lifetime technical support, providing the same high-quality after-service as in Japan.
For technical assistance or warranty claims, please contact SANWA customer support through their official website or the contact information provided with your purchase.





