ship from Japan 2.4GHz wireless design for long radio wave range. It is possible to operate from a distance of up to 10m. Only when there is no radio wave interference. It comes with a simple wireless mouse that is symmetrical and easy to use. This is a full keyboard with numeric keypad, yet it is a compact keyboard less than 400mm wide. It has the same 109 keys as a standard full Japanese keyboard. High-lifetime design capable of withstanding 10 million keystrokes.