【Multi-Protection, Warmth of Mind】JISULIFE electric hand warmer is made of aviation-grade aluminum and ABS high-strength alloy fireproof material, built-in intelligent chip protection, with overload, overcurrent, overcharge, overvoltage and short-circuit protection functions, safe to use, suitable for young people, the elderly and children.Certificated with CE, FCC, UL, ROHS, PSE safe to use.

【Instant Warmth & Balanced Thermal Conductivity】JISULIFE rechargeable hand warmer with dynamic heat balance technology, rapid heat transfer, rapidly warm-up in 3 seconds, uniform double-sided heating. 3 levels of temperatures 104℉ (40℃ )/122℉ (50℃)/140℉ (60℃) at your choice, contracting you a whole winter warmth.

【Max 13Hrs Long-Lasting Warmth 】JISULIFE electric hand warmer is equipped with 13500mAh battery with maximum energy and minimum weight, with USB-C charging port ensures provide up to 6-13 hours of heat. It can be used not only for winter heating, but also to save your phone/tablet that is running out of power.

【Ergonomic Design and Mini Size】JISULIFE reusable hand warmer shape curve natural, the surface coating delicate treatment, soft and smooth touch, enjoy the smooth warm feeling. Mini size compact and portable, handy to put in your pocket without burden, is your winter warm partner. 

【Smart Digital Display & Pocket-Size】JISULIFE rechargeable hand warmer with Real-Time LED digital display keeps you informed of the selected heat settings and battery remaining. You can plan your charging time and avoid getting burned. Pocket size, comfortable and small, suitable for your hands to hold.

【Warming Winter Gifts】Great gift for Christmas, Birthday, Anniversary, Thanks Giving Day, Valentine’s Day, etc.