9 Apparatus for measuring the speed of golf swing; digital measuring apparatus for golf swing, namely, apparatus for measuring the speed of golf swing in a golf simulator; instruments for surveying physical data for golf swing, namely, electronic apparatus for capturing and transmitting the motion and metrics of golf swing; pressure sensors for golf swing, namely, electronic golf training simulators with embedded software and electronic sensors for monitoring grip force transmitted to the golf grip for measuring golf swing; time recording apparatus for golf swing, namely, apparatus for recording time of golf swing; apparatus and instruments for accumulating and storing electricity, namely, electrical storage batteries, electric accumulators, and supercapacitors; apparatus and instruments for recording, transmission or reproduction of sound or images of golf swing; apparatus for the communication of data, namely, for recording and transmitting video, still images and electronic data relating to golf swing; mobile data apparatus for golf swing, namely, mobile data receivers, mobile data terminal, mobile hotspot devices relating to golf swing; downloadable graphical user interface software for golf swing; recorded graphical user interface software for golf swing; downloadable data processing programs for golf swing; recorded data processing programs for golf swing; downloadable gesture recognition software for golf swing; recorded gesture recognition software for golf swing; data processing apparatus for golf swing; screen golf simulator, namely, electronic golf training simulators