2-in-1 Electric Hand Warmer - A set of 2 symmetrical hand warmers that can be combined into a palm-sized hand heater, providing 360-degree warmth for your hands. Alternatively, you can use them separately, each hand holding one, or share one with family. The portable pocket design is suitable for travel, hunting, golf, hiking, camping, skiing, and more. AI Temperature Sensor Chip - hand warmers feature an integrated intelligent AI temperature control chip, offering 3 levels of precise heat release control, feedback, and guidance. By continuously analyzing and recognizing the temperature between the hand warmer and your hands, it ensures precise heat control for optimal comfort and safe heating. Maximum of 130 ? Longer Lasting Warmth - With a large 3000mAh battery capacity and our latest AI smart chip control, the electric hand warmer rechargeable provides you with up to 8.5-20 hours of warmth during the chilly winter. It effortlessly caters to your entire day's needs. The 3-level indicator lights keep you informed about remaining battery power and heating status, perfectly addressing your diverse requirements. Included type C dual charging cable can quickly charge the hand warmers Quality craftsmanship and exceptional ergonomic design that conforms to the natural curve of your palm while ensuring slip resistance. Our hand warmers have obtained CE, and FCC safety certifications Ideal Winter Warmth Gift - In the cold winter, our hand warmers make an ideal gift for Thanksgiving, Christmas, New Year, birthdays, and Valentine's Day, for gifting to family and friends. They keep your hands warm all day long while working in the office, attending classes, camping, hunting, or engaging in any outdoor activities during the cold winter. Can also be used for heat therapy for aches and pains. Fulfilled by EBKPower Hub, designed in the USA made in China under strict ISO requirements.