I get cold very easily so I'm all the time looking for things to keep me warm. My hands are always cold skin I decided to order this cute battery bank. It fits in the palm of your hand for easy grasping. There are 4 different modes of heat which takes approxiametly 15-30 seconds to get fully warm. On low setting it will last about 10 hours, highest setting is about 5-6 hours of heat. Highest heat setting can get quite hot so be careful with that mode. I also use it for my heated vest I have and it does wonderful. Love it
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