MT50 Trackball Mouse

Ergonomic Design: minimize arm & wrist movements, reduce muscle strain, and relieves RSI (repetitive strain injury)
2* Bluetooth + 2.4G Wireless: connect up to 3 devices simultaneously, one click to switch in between
Rechargeable: built-in Li-ion 600 mAh battery, a single charge lasts a month
3 Adjustable DPIs: adjust cursor sensitivity between 1000/ 1600/ 2400