Elegance and ComfortUT4 Rare Hand Warmer perfectly balances sophistication and functionality. With a unique, elegant diamond-style design, it's an eye-catching accessory. Durable, bright, and smooth to the touch. It's an ideal gift for women who value style, warmth, and comfort over everyday essentials Customizable Heat SettingsThree adjustable heat levels to choose from, find the perfect temperature with just one click Compact and PortableSizes just right for your palm, and weighs about the same as an apple, easily fits into a makeup bag, evening bag, or small handbag. Includes a lanyard to attach to your handbag. It keeps you warm whether you're commuting, traveling, or just out for a walk Fashionable and VersatileAvailable in bright and stylish colors, it pairs well with everyday outfits, gloves, clothing, and bags. An essential accessory for travel and everyday use Long-Lasting WarmthLong-Lasting Battery Life: 5-7 hours on the lowest setting, 2-4 hours on the highest setting. This ensures you'll never be short of warmth, no matter where you are or what you're doing Durable and PracticalUT4 Rare is equipped with IP34 dust and water resistance, making it a practical and durable choice for daily use. Whether you are outdoors on a rainy day or indoors in a coffee shop, you don't have to worry about liquid spills or splashes Magnetic Snap DesignEasily connect two hand warmers together to form a double-sided hand warmer, or separate them to share with friends. Simple snap, connect and use functions Trustworthy QualityUL certified, made of high-quality materials, excellent heating performance Specifications: Battery capacity: 2000mAh*2 Charging time: 3.5 hours Usage time: 3-6 hours*2 Usage time is 5-7 hours at the lowest setting, and 2-4 hours at the highest setting Input: Type C (5V 1A) Output: Not applicable Temperature level: 3 levels, 100F - 108F(35-42) / 109F - 117F(42-48) / 118F - 125F(48-52) Indicator light: Red (heating) / Blue (battery)