the watch vibrate when it is no longer connected to the phone

Yes there must be. I noticed that my watch kept vibrating everytime it was out of range from my phone. But I turned it off somehow.

I think it is like this:

Long press up

Scroll down to "Phone" and open it up

Turn "Warnings" to off.

You will get a vibration on the watch and a message like "Phone disconnected"

M

thanks a lot .. tonight I try