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The Vertical Mouse has a patented new shape that supports your hand in a relaxed handshake position eliminating the arm twisting necessitated when using a traditional mouse.
Vertical design,3 button optical mouse.
Patented sharp, comfortable to use.
Ergonomic design, anti-strain-injury.
Suitable handle, more steady of keystrokes.
Latest optical orientation technology adopted.
Resolution: Up than 800dpi
System requirement: Windows 98/2000/ME/XP