Ergonomic Wireless Mouse, the Ergogrip Tm The NEW Ergo Grip is an ergonomic wireless computer mouse with 5 buttons! Compares to other ergo mice, but the ErgoGrip has a better shape, Has a better and more natural hand grip, allowing the wrist and arm to REST! Has 5 buttons for better work results! Left click, right click, scroll, forward a page, back a page. No batteries required! (Rechargeable) The Ergonomic relief and shape promotes comfort at the computer!