The Wow-Pen JOY Optical Mouse combines break-through comfort with a host of productivity enhancing features unlike any mouse on the market today.The Wow-Pen isn’t just another mouse, it’s a revolutionary jump forward in computer input devices.Superior Ergonomic Design: The creator's of the world's first vertical mouse now introduce the Wow-Pen JOY. User convenience with Wow-Pen JOY's signature, pen-grip comfort.Quality: Compare with higher priced ergonomic computer mice, Wow-Pen JOY delivers premium-level quality and comfort for the price of a conventional mouse.Five Button, Full Function Mouse: Wow-Pen JOY introduces an all-new second right click button for this five button, fully functional mouse.You pick the hand position that best suits you. Plug and play.