Review (5/5): Finally found my heating pad
I've been limping along with an old 120 v sinus heating pad which gets burning hot. I wasn't sure if this USB pad was a toy or if it were able to get hot enough. I'm not crazy about the lavender scent but I can live with that.
This works really well. It is small, but you know that already. I move it to my sore spots as well as use it on my face (have sinus ans migraine troubles).