Sanwa Wired Ergonomic Trackball Mouse, Optical Rollerball Mice, Programmable Silent Buttons, 44Mm

Sanwa Wired Ergonomic Trackball Mouse, Optical Rollerball Mice, Programmable Silent Buttons, 44Mm Trackball, 600/800/1200/1600 Adjustable Dpi, Compatible With Macbook, Laptop, Windows, Macos|Item Condition: |New|Model: |Gmatb137|Color: |Wired|Product Dimension: |6.73 X 4.06 X 2.17|Product Information|Ergonomic Design - Places Your Hand In A Natural Wrist &Amp; Arm Position For Smoother Movement And Less Muscle Tension. Comfortable Finger Rests Just Fit In The Palm Of Your Hand. No Driver Required. Once You Get Used To It, You Will Love It!|4 Adjustable Dpi Levels - The Sanwa Trackball Provides Precise Cursor Movement For Superior Accuracy So You Can Get Where You Want On The Screen Quickly With Less Hand Movement, Improving Productivity And Efficiency. You Can Adjust The Mouse Among 4 Resolutions Of 600 / 800 / 1200 / 1600 Dpi Depending