ERGONOMIC DESIGN - handheld trackball can greatly avoide the harm of palm and muscle of your wrist for long time using mouse. ATTENTION: IF YOUR MOUSE IS NOT WORKING WHEN YOU WENT A FEW MINUTES WITHOUT USING IT PLS KINDLY CLICK TO WAKE IT UP.IF STILL... more
WirelessTrackball M570 stays in one place so you don t have to move your arm to move your cursor. The sculpted shape supports your hand and lets you rest your arm. Scroll wheel moves up and down through Web pages and long documents. Design also... more
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