Vibrating Watches and alarm watches are becoming very popular these days and are packed with features that were not available when they first came out.
I think one of the first popular brands was Casio and I remember well spending a lot of time reading the instructions and setting my first watch up.
All though they were a new innovation at the time and they had a lot of toy value they were not that reliable as I recall. They had many features but understanding how to set them up I found to be quite a trial.
I was surprised at how much noise one of those small wrist alarm watches could produce. So they have no problem at all in waking you up. You can of course turn the sound down. Do you remember the old fashioned mechanical alarm clocks that used to wake you up with quite a start? Well alarm watches that are set up correctly can do just as good a job without the jump factor.
They are not only useful for waking you up in the morning they have also many features that can be used throughout the day.
They can be used as popular reminder watches if say you have an important meeting to attend. Or you may have an appointment to keep. They can be used...