very convenient keyboard, and no noise. Stable and durable. Ergonomics design: comfort,gentleness and peace. 1) very convenient keyboard, and no noise2) Slim full size design keycap3) Membrane key switch, noise free4) Comfortable and excellent key touch feeling to release your fatigue in operation5) Stable and durable6) Ergonomics design: comfort,gentleness and peace7) Key stroke life time: 10, ...