Come and see our amazing products! The hand warmer with powerful chip can bring your warm touching feeling in 5 seconds. Two temperature modes for you to choose, including 47-5C,f and 55-60C,f, sufficing your different using needs. The hand warmer with 10000mah built-in battery also can be used as power bank, which can bring long working time and convenient digital device charging service. Pls confirm further with us if any query about packing info, inventory status and time schedule.