Feature:1. Safe and Metal Hand Warmer: This hand warmer has a built in intelligent protection system and is equipped with a protective device. It automatically turns off after a heating time of 25 minutes to prevent working too long or overheating. This portable hand warmer features an aluminum shell with a smooth surface and comfortable touch.2. Double Sided Fast Heating and Heating Settings: Press and hold the button to turn it on, and then release heat from the heating surface for 5 seconds. Heating helps to warm hands. Then there are three temperature settings (45, 50 , 55 ) that you can adjust according to your needs.3. Relax Body: This hand warmer is suitable for the neck, arms, legs, calves, thighs, shoulders, back, waist, and feet. While relaxing your body, it can keep you warm continuously, making you feel more comfortable in the cold winter. It is suitable for mountaineering, hiking, traveling, camping, skiing, cycling, and more.4. Portable Hand Warmer: The mini hand warmer is small in size, easy to carry, and easier to put into a pocket. It is suitable for men or women in cold winter. The hand warmer can be used continuously for up to 12 hours to ensure long term use and is suitable for many winter outdoor activities. Magnetic suction design on the back for easy outdoor use.5. Best Gift: This rechargeable hand warmer is the best gift choice for children, youth, boys, girls, men, women, and the elderly.Specification:Item Type: Portable Hand WarmerProduct Material: Metal, ABSWeight: Approx. 171g / 6.0ozSingle Battery Capacity: 2500mAhBattery Type: Lithium Battery (Shipped With Built In Battery)Product Size: Approx. 9 x 5 x 2cm / 3.5 x 2.0 x 0.8in.Package List:2 x Portable Hand Warmer 1 x Charging Cable 1 x Hanging Rope 1 x Storage Bag 1 x Manual