Picked up the great blood pressure digital thingy.
This was not one of the rather inexpensive ones because they have small wrist wraps, this one should do the trick cause Jack has thick wrists.
Have had a lot of fun trying to make it work. If you know what your blood pressure is normally then it is easier to see if the device is working properly. So far it is just fun! lol
Peace........(it has been a better day)