SANWA Bluetooth 5.1 + 2.4 G Wireless Ergonomic Trackball Mouse, Finger Control Roller Ball Mouse, 3 Device Switch, Silent Programmable Buttons,.

FINGER CONTROL & 25° ERGONOMIC DESIGN - Equipped with a 44mm trackball and precise tracking system, just move your index finger to move the cursor and operate. No frequent wrist movement, no thumb pain worry. The ergonomic 25° natural mouse angle, fits your hand perfectly and helps to reduce muscle pain and wrist stiffness. Not only work on flat surfaces but also your leg, sofa, and other surfaces as well. BLUETOOTH 5.1 + 2.4G WIRELESS CONNECTION - This mouse with trackball adopts 2 Bluetooth modules and a 2.4G wireless module, which means it can connect 3 devices simultaneously and ensures stable connection. Freely switch the mouse between your PC, laptop, and Mac, and finish various tasks easily. PROGRAMMABLE & SILENT BUTTONS - The ergonomic trackball mouse is programmable for different functions. Download SANWA Trackball mouse software to customize your mouse buttons and increase work efficiency(find it in the user manual). Features noiseless click on left/right button, suitable