Wireless keyboard and mouse set features an ergonomist-approved design that keeps your hand in a natural position for improved comfort. Split and sloped keyboard with adjustable reverse tilt positions your hands, wrists and forearms for comfort and neutral alignment. Built-in wrist support cushions and cradles wrists to prevent strain through extended use. Dual wireless design with 128-bit AES encryption security provides the flexibility of 2.4 GHz and Bluetooth 4.0 LE for a reliable connection. Quiet clicking provides smooth, nondisruptive use in low-noise environments. Spill-proof keys make cleanup fast and easy. Five-button mouse enhances your navigation and productivity. Three-mode, power-saving switch allows you to toggle between 2.4 GHz, Bluetooth and Off for the best battery life. Caps lock, numbers lock, scroll lock and F-keys make typing and navigating easier and more efficient.