WIDE COMPATIBLE SYSTEMS - SANWA multi device trackball mouse can work with desktop PCs, laptops, and tablets with OS systems, such as Windows11/10/8.1/8, macOS 12/11/10/13~10.15, iPadOS 13~15, iOS 13~15, Chrome OS, and versions later on. DPI & WEB SWITCHES - This rollerball mouse wireless supports 3 levels of cursor movement speed: 1000/1600/2400. Equip with forward/Backward buttons, realize web pages switch on browsing, and make your online surfing more convenient. For graphic design, drawing, and other fine works, we have a DPI deceleration function, which can change the mouse DPI to 100-200, and make your work perfect in detail. 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 for usage in quiet places like public occasions, libraries, meetings, cafeterias, or at night. Note: The software does not work with Mac OS or Chrome OS. 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. 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.