Hand warmer and charging 2-in-1 This rechargeable hand warmer is also a 10000mAh portable power bank which can be used for hand warming and emergency charging of cell phones during outdoor sports, camping, skiing, hiking, and work in winter. The cold LED digital indicator to keep you informed of the remaining power and heating temperature. Double-sided heating & 2 levels temperature The reusable hand warmer can quickly heat up to 98.6 on both sides within 3s, no need to wait for warmth. 113/125.6 two temperature settings can be easily adjusted, and usb hand warmer can last for 8-24 hours according to different temperature environments. High-end material, safe heating Hand warmers adopt triple flame retardant material, intelligent and safe heating. With multiple protection mechanisms, overcharge protection, overvoltage protection, overdischarge protection, and overheat protection. The electric hand warmer has a 4-hour intelligent power-off function, so you can enjoy the safety of warm sleep at the same time. Small and portable, good choice for giftsCompact and portable shape, fashionable and simple design, exquisite packaging, a variety of colors to choose from. This hot hands hand warmers is loved by young women, which is the best gift for Christmas, Halloween, Thanksgiving, New Years.