Gaming Ultra-slim Wireless Keyboard and Mouse E780 Energy Ergonomic saving+super silent Black Powerful 2.4 GHz wireless connection with one tiny Unifying receiver that stays in your notebook, would work even 15+ feet away Energy Saving! Auto-sleep after couple minutes un-touching. The high-definition optical mouse has comfort and control in your hands with smooth, accurate tracking Humanized design, add a series of shortcut function keys cooperated with FN key Compact and comfortable combo, designed especially for the minimalistic, wire-free desktop, also good size for laptop