Wireless Trackball Ergonomic Mouse w/ Free & Easy Thumb Control DPI Adjustment, Precision Tracking, Multi-System Compatibility with PC, Laptop,...

Ergonomic Trackball Design w/ Free Thumb Control: Reduce the strain on your wrist by moving the cursor smoothly via the trackball instead of moving your wrist and arm. Easy DPI Adjustment: Toggle between 800/1200/1600/2400 DPI and adjust the sensitivity of the mouse according to your preference. Precise Trackball Movement: Experience precise cursor movement and always remain in control! The smooth trackball functionality allows you to move the cursor around with extreme accuracy and control. Convenient Wireless Functionality: Reduce the clutter on the desk with the V728s wireless functionality. Simply plug the included USB dongle into the computer and enjoy using the mouse. Requires 1 x AA battery (NOT included).