SANWA 2.4G Wireless Trackball Mouse GMAWTB40 + 40mm Replacement Ball Bundle, Programmable Rollerball Mice, Silent Click, 600/800/1200/1600 Adjustable DPI, Compatible with MacBook, Laptop, Windows, mac - SANWA SUPPLY

• 【WHAT INCLUDED IN THIS SET】- A wireless ball mouse GMAWTB40 + a 40mm 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. Technical 19° tilt angle, keep your wrist natural, allow your arm muscles and shoulder relived for all-day long work. Specialized in precise pointing, multi-screen work, file works, excel, data processing, and efficiency improvement. 【POWERFUL FUNCTIONS】- This ergonomic trackball mouse supports 4 level DPI switch: 600 / 800 / 1200 / 1600. Features noiseless function on the left & right clicks. Suitable for PC operation in quiet places such as public places, libraries, meetings, or at night. This SANWA trackball mouse is programmable for different functions. Download SANWA Trackball mouse software to customize your mouse buttons. 【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. 【VARIOUS COMPATIBLE DESIGN】- Excellent computer trackball mouse, work with Windows(DOS/V), Mac, Chrome OS systems PCs with a USB receiver. Compatible with Windows 11/10/8.1/87, mac0S 12/11/10.12~10.15, Chrome OS, and the versions below. 【FIT IN 40MM TRACKBALL MOUSE】- This replacement ball is designed for any trackball mouse using a 40mm/1.57 inch trackball. Compatible with models likeSANWA：GMAWTB40, GMABTTB41, MATB39. Kensington: Orbit Fusion(K75326WW), ‎K70990WW, K72675WW, K72337US, K70991WW, K70990WW.