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Title: too big - not ergonomic for medium hands
Review: I bought this to try and help reduce arm/shoulder pain associated with using a mouse constantly at work. This might be great for a guy with large hands, but as a female with medium hands (wear large size in isotoner gloves) it is way too big.The way your hand rests on the mouse, I kept accidentally clicking the right mouse button.Few people just use a mouse to scroll around without clicking. Since carpal tunnel usually makes your thumb and first finger hurt, constantly clicking with your thumb is not too good of an idea. My hand hurt worse in 30 minutes of use than with the regular cheap mouse.I'm returning this and trying something else. I think a trackball that uses your thumb to move the ball would be less hand stressful than this.
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