ELECOM Trackball Mouse Wireless, Ergonomic Mouse, 3 Device Connection, Wired (USB, Bluetooth, Track Ball Mouse, Thumb Control, Compatible for PC, Laptop, Mac, Windows, macOS, EX-G Pro (M-XPT1MRXBK

Trackball mouse with 8 Button FunctionDesigned with a high performance gaming optics system sensor and lensThis trackball mouse bases on ergonomics, effectively reducing user’s wrist strain and muscle painThe 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 cleanedSystem requirements: Windows 7, Windows 8. 1, Windows RT8. 1, Windows 10 or later, macOS 10. 13 or laterResolution DPI: 500/1000/1500 count (switchableSizeWeight: Size: W4. 3(108mmX L5. 3(135mmX H1. 9(47. 7mm, Weight: 5. 2oz(without batteryConnectivity: wired / wireless / bluetoothBattery requirement: 1 X AA battery(Included Battery Remaining Light Lamp equippedEnglish ManualMouse Assistant Software can be download for FREE. Listed as Technical Specification：User Manual [PDF ]:.