Double-sided innovation, all-round warmth - Tydse hand warmer double-sided heating technology ensures even heat distribution and perfect fit. From fingertips to palms, every inch of skin can feel the warm care; ultra-thin and light, easy to carry, whether held in the hand or put in the pocket, it can provide comprehensive and lasting warmth; breaking the limitations of traditional single-sided heating, bringing a new comfortable experience to your hands | Intelligent temperature control, one-touch warmth - Tydse smart hand warmer brings precise temperature control experience. Three adjustable temperature levels, from 95°F to 136°F, to meet various needs. Quick heating in 1 second, hands are warm. Easy to operate: long press the switch, single click to adjust the temperature, double click to check the power level. Whether it's cold outside or slightly cool inside, Tydse hand warmers rechargeable can provide just the right warmth. | Strong battery life, warmth anytime, anywhere - The charging box is equipped with a 10,000mAh large-capacity battery, and each hand warmer has a built-in 2,000mAh battery, which means that the charging box can fully charge 5 hand warmers, ensuring that you can enjoy lasting warmth during long outdoor activities.(Note: The charging box is only suitable for hand warmers and cannot charge electronic products such as mobile phones and tablets) | Safety first, smart warmth - our products have passed strict UL, CE, and FCC safety certifications, providing you with the most reliable use guarantee. Advanced overheat protection and anti-short circuit technology allow you to enjoy warmth without worrying about any safety hazards. The charging system adopts multiple protection mechanisms to fundamentally eliminate battery safety hazards. Choosing Tydse means choosing a safe, smart, and caring hand warmer companion. | Warmth with you, peace of mind when buying - 12-month warranty and 24-hour customer service are provided, which fully reflects our care and commitment. This hand warmer is an ideal gift for Thanksgiving, Christmas, New Year, birthday and Valentine's Day. It is perfect for the office, classroom, camping, hunting or any outdoor winter activities. No matter where you are, it will bring you an unparalleled warm experience.