Graphene USB Rechargeable Winter Hand Warmer - Portable, Waterless, Explosion-proof Electric Heater

Stay warm during the cold months with this innovative, rechargeable hand warmer. Utilizing advanced graphene technology, this portable device provides efficient and consistent heat to keep your hands cozy. Designed for safety and convenience, it operates without water and features an explosion-proof construction. With its USB rechargeable capability, it's easy to power up and perfect for on-the-go warmth. Ideal for outdoor activities or just keeping comfortable indoors, this compact hand warmer ensures you stay warm wherever you are. Power supply mode: USB Rated voltage: 5 Rated power: 10 Heating method: electric heating pad Is there a built-in battery?: Built-in battery Built-in battery capacity: 2000mAh-4000mAh (inclusive) Product Weight: 200 Battery life: 3-6h (inclusive) Manufacture country: China Instructions included: No