Nulea M501 Wireless Trackball Mouse, Rechargeable Ergonomic, Easy Thumb Control, Precise & Smooth Tracking, 3 Device Connection (Bluetooth or USB), Compatible for PC, Laptop, iPad, Mac, Windows. D-Black sold2020 Every antenna should have a

Every antenna should have a Marketty spring to protect the antenna

One transmitters supports several IR headphones working simultaneously

3 Materials PP/PA PP/PA PP/PA PP/PA PA PA/ABS Battery Type Solar Cell+non-replaceable CR2450 battery Solar Cell+replaceable CR2450 battery Solar Cell+replaceable CR2450 battery Solar Cell+replaceable CR2450 battery Solar Cell+replaceable CR2450 battery Replaceable CR2450 battery

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Nulea M501 Wireless Trackball Mouse, Rechargeable Ergonomic, Easy Thumb Control, Precise & Smooth Tracking, 3 Device Connection (Bluetooth or USB), Compatible for PC, Laptop, iPad, Mac, Windows. D-Black sold2020 Every antenna should have aNulea M501 Wireless Trackball Mouse, Rechargeable Ergonomic, Easy Thumb Control, Precise & Smooth Tracking, 3 Device Connection (Bluetooth or USB), Compatible for PC, Laptop, iPad, Mac, Windows. Product Features Ergonomic Design with Smooth Thumb Control: Move your cursor by the smooth trackball instead of moving your wrist and arm. Let the easy and smooth thumb control help you reduce your muscle stress. The optimal angle of the trackball mouse