About This

• 【Cost-Effective Bundle Set】- What you will get? A GMATB128BK wired trackball mouse and a 34mm replacement ball. With this trackball mouse, you will not need to mouse around to move the cursor as thumb controlled trackball stays in one place. Not only work on flat surfaces, but also on your leg, sofa and other surfaces as well. A full control of everything is within your fingers.
• 【ERGONOMIC DESIGN】- Places your hand in a natural wrist & arm position for smoother movement and less muscle tension. Comfortable finger rests just fit in the palm of your hand. No driver required. This corded trackball mouse supports 4 level DPI switch: 600 / 800 / 1200 / 1600. Noiseless click on left and right buttons. Suitable for late-night PC operation, usage in quiet places such as public places, library, hospital or meetings.
• 【WORK WITH OPTICAL SENSORS】-This replacement trackball provides excellent optical sensors sensitivity. Comfortable for finger control and ensures a smooth & agile movement. Specialized in precise pointing, multi-screen work, file works, excel, data processing, and efficiency improvement.
• 【TRACKBALL COMPATIBLE SYSTEMS】- Our computer trackball mouse is compatible with most system including Windows 11/10/8.1/8/7/XP, macOS 10.13～10.15. Fit for Notebook, PC, Laptop, Computer and other device. *Not fully compatible with Apple products.
• 【34MM REPLACEMENT BALL】- Except for the trackball mouse, this set is also equipped with a 34mm ball for replacement. Compatible with models like MX Ergo, M570, M575, MX Ergo Plus; ELECOM: EX-G Pro(M-XPT1MRXBK), EX-G; Kensington: TB450, TB550, Pro Fit Ergo(K75326WW), Perixx: PERIPRO-801, Perimice-517 / 717 / 520 / 720; SANWA: GMATB128BK, GMAWTB129BK, GMABTTB130BK, GMATB167, GMAWTB168, GMABTTB169, GMATB155, GMATB44BKN/RN, GMABTTB1BK, etc.