[This review was collected as part of a promotion.] This massager is a God-send! I get very stressed at work sometimes, and this helps so much with muscle tension. I take it to work, I use it at home. The charge lasts quite a bit of time. The cordless feature makes it very easy to bring with you anywhere. ( Even kids athletic games! ) Heat is an added bonus. If you are on the fence about this, give it a try. You'll be glad you did.