Stay warm with this innovative USB portable hand warmer bag, designed to provide soothing, consistent heat for your hands, back, abdomen, feet, and joints. Featuring advanced graphene heating technology and powered by an external 3000mAh USB power supply, this hand warmer ensures efficient warmth with a safe, constant temperature. The external power supply also comes with an extension cable for added convenience. Whether you're outdoors in cold weather or relaxing at home, this multi-function hand warmer is a must-have. Its compact, explosion-proof design offers both durability and portability, making it perfect for on-the-go warmth. Convenient and easy to use, it’s an essential winter accessory for those who need reliable warmth anywhere, anytime. Enjoy the comfort of long-lasting heat, with everything you need included in the package.

Power supply mode: USB

Rated voltage: 5

Rated Power: 10

Heating method: Heating wire

Hand Warmer Types: Hand Warmer

Function: Warm hands, warm back, warm abdomen, warm feet, warm joints

How it works: External power supply