🔥 Warm hands, warm hearts! 🔥 AI temperature sensor ensures optimal comfort with 3 precise heat settings. Enjoy up to 20 hours of cozy heat, keeping you warm from dawn till dusk. Crafted with supercar-inspired ergonomics and safety certifications for peace of mind. An ideal winter gift for loved ones, ensuring warmth during the coldest days. Experience 360-degree warmth with a portable design perfect for any adventure. 20 hours warmth 6000mAh battery UL certified safety The UNIHAND AI Hand Warmers are a rechargeable 2-pack featuring a powerful 6000mAh battery, providing up to 20 hours of adjustable warmth. Designed with an intelligent AI temperature control chip, these hand warmers ensure optimal comfort and safety, making them the perfect companion for outdoor activities or a thoughtful gift for loved ones during the winter season.