Graphene Hand Warmer With Constant Temperature Heating USB Charging Digital Display Water Portable Warm Handbag Features: 1. Instant Heating: Our graphene hand warmer features a cutting- technology that allows it to heat up within seconds, providing you with warmth and comfort. Say goodbye to chilly hands during the cold winter! 2. -Sided Heating: Designed with double-sided heating, our hand warmer ensures even heat distribution on both sides. This unique feature provides consistent warmth and eliminates any cold spots, keeping your hands cozy and toasty. 3. USB Rechargeable: No more hassle with disposable batteries! Our hand warmer comes with a convenient USB charging port, allowing you to easily recharge it using your computer, power bank, or any other USB-compatible device. Stay warm anytime, anywhere. 4. Easy to Clean: Worried about keeping your hand warmer clean? Don't be! Our product is water-washable, making it easy to dirt and stains. Simply rinse it under running water and it will be good as new. Say goodbye to dirty hand warmers! 5. Overheat Protection and Temperature Control: is our top priority. Our hand warmer is equipped with an intelligent overheat protection system, ensuring that it automatically turns off when the temperature exceeds a certain limit. Additionally, it offers three adjustable temperature settings, allowing you to customize the of warmth according to your preference. Enjoy warmth without worries. Product Description: Fabric: 100% polyester (except coating) Product size: 430mm*320mm Heating mode: far infrared fever Battery capacity: 5000mAh Heating power: 9W max Function mode: three gears heating automatic constant temperature Battery life: depends on the power of the charger Product color: beige/ green Product weight: 138g Power supply :USB Rated voltage :5 Products include: 1* warm bag 1*5000 mah battery 1* charging cable