Sequence beats on your Casio? 

If they would simple add the posibility to choose a speed (like 90 beats per minute BPM for example) and the number of beats per mesure (lke 4/4 fro example), then they would have created what Seiko did later on with one of their watch: a metronome watch for musicians)

Interesting vid but the watch sound is barely audible. I realise it's not loud but could've done with some kind of microphone on it;