SANWA Bluetooth Trackball Mouse, Wireless Ergonomic Rollerball Mice Optical, Programmable Silent Buttons, Support 2 Device, Thumb Control, Rechargeable, 4 DPI, Compatible with PC, Mac, Laptop, Windows - SANWA SUPPLY, GMABTTB169

• 【ERGONOMIC TRACKBALL DESIGN】- Equipped with 34mm trackball and sensitive 3-dot positioning tech, precise thumb control to move the cursor, no need for frequent wrist movement. Technical 15° tilt angle keeps your wrist and shoulder in natural lines and helps to reduce muscle stress, wrist pain, RSI, and carpal tunnel syndrome. Recommend for medium to large hand persons, right-handed. Perfect for drawing, typing, working, playing, etc. 【SILENT & DPI ADJUSTABLE】- This wireless trackball mouse supports precise cursor movement speed with 4 levels, ranging from low to high: 600/800/1200/1600. Suit different tasks, ensuring accuracy & speed. Press the middle DPI button to change it faster or slower. Features noiseless function on the left & right clicks. Suitable for PC operation in quiet places such as public places, libraries, meetings, or at night. 【RECHARGEABLE & 2 DEVICES CONNECTION】- This quiet trackball mouse supports 2 Bluetooth modules, simultaneously connecting and switching between 2 devices. No battery is needed. it is rechargeable with 4.9ft cable. 1h charging for 20h constant working. 【PROGRAMMABLE BUTTONS】- This SANWA ergonomic trackball mouse also has a forward/back function. Besides, it is programmable for different functions. Download SANWA Trackball mouse software to customize your mouse buttons and increase work efficiency. Note: 1. The software does not work with Mac OS or Chrome OS. 2. Programmable function works when the software on. 【WIDE COMPATIBLE SYSTEMS】- Our Bluetooth roller ball mouse is compatible with Windows 11/10/8.1/8, Mac OS 12/11/10.13~10.15, Chrome OS, and the versions below. Great idea for limited space, not only work on flat surfaces but also on your leg, sofa, bed, carpet, etc. Auto-sleep function, quite power-saving and click to reactivate easily.