The Adesso WKB-1100CB offers many features that proves the statement, "Big things do come from small packages." The mini-size keyboard and mouse will save its users space in their environments. With its wireless features, there are no tangling wires. Its membrane key switch provides a quiet typing experience with life cycle up to 5 million keystrokes. When both units are in inactivity, the battery saving feature will prolong their battery life extending their usage period. The keyboard itself also offers popular hotkey commands conviently located at your fingertips. Last but not least, the mouse's enhanced optical engine ensures navigating with precision. Features: 2.4 GHz Wireless TechnologyThis Keyboard and mouse work at any angle with a range of up to 30 ft. with no wires to get tangled. Spill ResistantThe keyboard's spill resistant design helps to prevent fluids from staying inside, which would otherwise cause damage to the keyboard. Quiet Membrane Key SwitchMembrane key switches provide a better responsive and quieter typing experience lasting up to five million keystrokes. Advanced Optical Snesor TechnologyThe optical sensor technology lets you work on most surfaces with improved speed, accuracy, and reliability than traditional mice. Battery Saving With the built-in Auto-Sleep features, you can automatically maximize your battery life when your keyboard is not in use.