Plug and Play, easy to installWireless, With trackballOff table and without limitation of operational spaceScrolling function can be controlled simply by your thumbUSB 2.0 interface, plug and play, no software required
Special design, can avoid the harm on your wrist and muscle, greatly reduces discomfort for Arthritis and CTS suffers Easy to use - left or right hand, or cradled between both Ideal for both laptops and desktops Place end of index or middle finger on trigger button & thumb on
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