This is just one basic post for does who want to know the difference of facts and fiction.
It is leagal to have a mobile phone with you when you enter a casino and there is no law that dictate it is forbidden that it vibrate - common sense.
First you do is making one basic setting with your mobile phone which is put it on flight mode - that way no one can call you.
I recommend this metronome for mobile phone - put it into silent and let it vibrate.
link:://:.garret.ru/En_Timer.htm#Metronome (link:://:.garret.ru/En_Timer.htm#Metronome)
If you want a watch which is also leagel hehehe then my mate Davey gave my two - what a gentleman he is :-)
It has a safety to save batteries life - so it vibrates for 15 min - so you have to touch one buttion once every 15 min to let it going non stop.
link:://:.interstatemusic.com/webapp/wcs/stores/servlet/product_900260996 (link:://:.interstatemusic.com/webapp/wcs/stores/servlet/product_900260996)