With its built-in wrist support and neutral grip, the ergonomist-approved Pro Fit® Ergo Wireless Mouse positions your hand for improved comfort. Features include dual wireless (2.4 GHz and Bluetooth 4.0 LE) with 128-bit AES secure encryption, quiet clicking for quiet office environments, five buttons (including forward and back) to enhance productivity, a three-mode power-saving switch, and three DPI settings (800/1200/1600) for improved cursor sensitivity and precision. - Built-in wrist rest and neutral grip supports, cushions, and positions the wrist for comfort and neutral hand alignment - Ergonomist-approved design positions your hand for improved comfort. - Dual wireless with 128-bit AES security encryption delivers the flexibility of 2.4 GHz and Bluetooth 4.0 LE, with government-grade encryption. - Five buttons (including forward and back) enhance navigation and productivity. - Quiet clicking makes for smooth and non-disruptive operation, ideal for quiet office environments. - Three-mode power-saving switch allows you to toggle between 2.4GHz, Bluetooth, and Off for best battery life. - Three DPI settings (800/1200/1600) let you dial in the sensitivity and precision of your mouse cursor.