Our Hand warmer combines hand warmer and power bank, used as a comfortable handwarmer in cold winter and a portable phone charger for emergency use. Featured with 3 adjustable temperature levels, double-side heating, 5000mAh rechargeable battery, intelligent protection system, keep you warm and refill your phone battery. Great warm gift for kids, adults, the elders. Ultra-compact and portable, easy to carry on the go. *MULTIPLE PURPOSES & CONSIDERATE - Perfectly combines hand warmer and power ba