Trackball mouse with 8-Button Function Designed with a high-performance gaming optics system sensor and lens This trackball mouse bases on ergonomics, effectively reducing user’s wrist strain and muscle pain The ball is held in place by the ball bearings, but can easily be popped out of the device, by pushing it through the hole in the bottom and it can be easily cleaned System requirements: Windows XP, Windows 7, Windows 8.1, Windows RT8.1, Windows 10 or later, macOS 10.12 or later Resolution DPI: 500/1000/1500 count (switchable) Size & Weight: Size: W4.5"(114.7mm) X L7.2"(181.9mm) X H2.3"(57.2mm), Weight: 9.2oz Connectivity: USB wired
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