Heating Belt with Massage - Adjustable Warm Wrap for Back & Waist Pain Relief - Soothing Heat Therapy for Muscle Relaxation (Non Rechargeable Version)

I was not aware that I had to have a heater power bank to use this away from electricity. It works via USB cord without the power bank but it has to be plugged in constantly to work. Looking at the instructions sent, it seemed like this is a massager too, but it is not really. Not this model anyhow. That would have been awesome! This model just heats up and has 3 different heat levels. The highest level is very hot, and I cannot think why anyone would need that kind of heat for their body, but it is there. Easy to use with the one large button and the Velcro strap to attach to the body. The size is large, so almost anyone can use this for their aches and pains for relief.