The keyboard in this wireless keyboard and mouse set is a rechargeable keyboard, and the mouse requires a battery.Keyboard size: 41.5cm * 12.2cmThis is a Lenovo wireless keyboard and mouse set that the owner has encountered in recent years and feels very good.This keyboard and mouse set is the keyboard and mouse set that Lenovo's 10,000 yuan all-in-one machine yoga won the offerding.It is not sold separately on the market.National Bank Standard Edition, full-size layout,Narrow frame X architecture scissor foot design, surface metallic paint treatment, notebook keyboard feel! KeyboardWith charging cable, the mouse has three-speed DPI adjustable, and uses two small AA batteries.