•Using the double-sided heating film, the large area of heat is more sufficient •The outer layer is made of down cloth fabric, high-density cold storage, inner fiber cotton filling, light warm lock warm •With a 5000mAh large capacity Power Bank (Not Included), heating whatever you want •Smart 3 gear, the temperature is adjusted at will. The lower gear is 37°C, the medium gear is 45°C, higher gear is 55°C •Automatic power cut for 2 hours, farewell to the traditional hot water bag for a long time •USB connector design, charge bank, computer, and socket can be the power supply Specifications: •Heating method: graphene heating •Heating temperature: 37℃ / 45℃ / 55℃ •Power supply input: 5V-2A •Product size: about 420 x 270mm •Product weight: about 140g Note: The product does not include the Power Bank, the pictures are only for the renderings. Package included: •1 x Electric Hand Warmer with USB Cable •1 x English Manual •Other items not included