This electric heating bag hand warmer is made of graphene carbon fiber and flannel, and the graphene carbon fiber inside can heat quickly, which can warm hands and relieve sore hands. The electric hand warmer has 3 temperature adjustments, easy to operate, and is suitable for cold winters. Features - ColorPink - Outer layer material: Flannel - Inner material: Graphene carbon fiber - Size: About 26.00X16.70X2.00cm/10.22X6.56X0.79in - : USB - Rated power: 5 W - Rated voltage: 5 V - Power supply: 5V/1A - Temperatures levels: 55 degree centigrade, 45 degree centigrade, 40 degree centigrade - Rapid heating system: The graphene carbon fiber inside can heat quickly, and can also warm hands in winter. - Temperature adjustment: The electric heating pad hand warmer has 3 kinds of temperatures to adjust, easy to operate. - USB charging: USB , easy to charge, connect to a power bank, or any power product with a USB port. - Multiple occasions: Perfect for cold winters, everyday use, and when relaxing on the sofa, bed, or desk. - Versatile uses: Can be used to warm hands/feet, or relieve muscle soreness, soothe the abdomen during menstrual cramps time, etc. Package list: 2 x Electric Heating Bag