Quote Originally Posted by killerweed420
In my experience with QF if you heat it up to the upper level,100 it will stay in range for about 3 or 4 hours if you stick it behind your nut sack.Also the heating pad that comes with it is a little slow so I picked up some heating pads from the dollar store and they will heat it in about 5 to 10 minutes.
Just ordered QF 4.0. Are you saying without a heating pad it stays in that range or nutsack + heat pad? I know I need to test and figure out what works but just wanted to be sure I understand how others are doing it.

I will be able to microwave before leaving for the test so should I save the included heat pad and test with the dollar store variety?