2.4z wirel transssion, stable and no delay, strong -ference abili.
Membrane keyboard design, strait up and down feel, fast response.
Frosted keyboard, smooth surfe, mfortable feel.
The key fits finr pulp curve, smo opeion, mfortable to pe.
Ergonoc design, the fits hand curve, better supports the palm, not easy to fatigue during long-time use.