Simplify Navigation: Enjoy precise control without a mouse using the built-in optical trackball with 800 DPI resolution, ensuring superior accuracy and smooth motion for efficient screen navigation with minimal hand movement. Space-Saving Design: This compact 11.75" keyboard features a Windows layout with an embedded numeric keypad, making it a perfect space-saving solution suitable for various environments, such as small office cubicles, home offices, and kiosks. Enhanced Typing Experience: Benefit from quiet membrane keys that offer fast typing speed and a lifespan of over five million keystrokes, ensuring durability and a comfortable typing experience ideal for daily use. Easy Compatibility: Designed for seamless integration with Windows operating systems from 2000 to 10, this keyboard connects effortlessly via USB, providing a reliable interface for a wide range of devices and applications. Convenient Specifications: Weighing just 1.2 lbs and measuring 11.75" x 6" x 0.75", this keyboard is equipped with an optical trackball sensor, 800 DPI trackball resolution, and a 87-key US layout for a comprehensive and user-friendly input solution.