- USB Power Supply: Embrace modern convenience with our innovative USB interface. Easily charge from your computer or any USB power source, making it perfect for both indoor and outdoor use. - Smart Energy Efficiency: Our hand warmer features intelligent constant temperature control with low power consumption. Operating at just 10 watts, it can run for approximately 13 days on 1 kilowatt-hour of electricity. It includes multiple safety features such as automatic overheating shut-off, insulation protection, short circuit protection, and over-temperature protection for peace of mind. - Multi-Purpose Functionality: More than just a hand warmer! This versatile product doubles as a heating pad for your waist, abdomen, legs, and shoulders, providing warmth wherever you need it most. - Comfortable and Portable: Made from soft plush material, this electric hand warmer is lightweight and easy to carry. It is designed for long-term use, ensuring comfort during extended periods. Use Scenarios: 1. Outdoor Activities: Keep your hands warm while camping or hiking without the hassle of disposable hand warmers. 2. Office Use: Enjoy comfort during chilly office hours by using it discreetly under your desk. 3. Home Relaxation: Use it as a heating pad on your back or abdomen while relaxing at home after a long day. This hand warmer combines practicality, efficiency, and comfort, making it an essential addition to your daily routine.