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Features:
_x000D_Can be used in the hands, without Plane support, facilitate adjustment plane sitting, great ease in mice caused by the standard for the wrist pain and cervical vertebra_x000D_
Rolling track sphere, thumb move easily, accurate location, click convenience_x000D_
2 kinds of usage in hand, put in use normal mouse equivalent desktop, put in use and arbitrary_x000D_
The ball rolling track position, use two kinds of usage, how to switch automatic identification with how to use_x000D_
Ergonomics design, completely in hand grip as holding eggs, relaxed and comfortable_x000D_
Suitable for all kinds of leisure, can play any position, wrist not easily, neck pain acid_x000D_
Business gifts reveal grade and class, family friend more add infinite intention sent_x000D_
USB interface (can match the PS / 2 interface)_x000D_
1200dpi desktop, track the resolution 1000dpi ball_x000D_
plug and play, easy installation, avoid driving_x000D_
Compatible with Windows95/98/2000/ME/XP,Windows NT, vista and so on;_x000D_
size:6cm 4cm 12cm _x000D_
Line length: 2M_x000D_
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