CALIFONE INTERNATIONAL, INC. KOV-N300BWL Goldtouch Newtral 3 Mouse Wireless, Large, Black - Wireless - Radio Frequency - 2.40 GHz - Black - 1 Pack - USB - 2400 dpi - Large Hand/Palm Size - Right-handed Only

Gripping Options: With the Newtral 3 Mouse, you will have two grip options: the Precision Grip and Ergo-Grip (attachment flange). The Ergo-Grip design with detachable palm support keeps the underside of the pinky finger and palm off the surface of the desk to reduce friction. Reduces Pressure of Your Wrist: The soft gel applied to the Ergo-Grip flange support increases the size to bear your hand weight and reduces the pressure of your wrist. Ergonomic Design: This mouse reduces wrist and forearm pronation through the concave depression on the thumb side of the mouse combined with the 33 degree slope off the horizontal from the pointer finger to the fifth finger position. Reduces Grip Requirements: The slanted semi-fist shape design allows gravitational force on the hand to be employed to provide the majority of the control required to precisely move the mouse. Programmable Buttons: With 6 entirely programmable buttons on the mouse, you can customize how you navigate. Driver installation is needed to program the button functions, and is only compatible with Windows systems. The Newtral 3 Wireless Mouse has an adjustable DPI sensor, and can be set to: 800, 1600, 2400 DPI