This thing is great. 2 problems though. 1. It's ot big enough to heat my whole body, so in colder months Im going to need more than 1. And #2... the instructions aren't well written, nor do they offer any indication of just how long this will last. It's a 5200mAh battery, so Im guessing on low about 5 hours? and on high 3?
I have to test it to see.