1. Perfect ergonomic design, comfortable hand feeling
2. Optionally turn over page with any direction, easy and fast to browse internet.
3. 5D rolling function can move the screen freely no need to move mouse.
4. Newest optical sensor and technology with high resolution of 800 dpi, Stable and accurate in movement, any surface be used.
5. Available for PS / 2, USB and U+P connector.
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