Warmth, Moving with YouDuring hunting, camping, hiking, golfing, skiing, shovelling, or even a morning jog, walking dog with this portable hand warmers. Warmth and comfort are just a reach away.Unique Heating TechnologyThis hand warmer adopts a unique side integrated arc design and 720-degree all-round uniform heating technology. You never find second one on Amazon, welcome to verify. The body is small and light, and velvet shell is available. In the cold winter, you no longer have to worry about being cold as you hold it in your hands like other metal hand warmers. Adults and children can hold it easily and comfortably, and it feels soft and delicate.AI Temperature Control, Multi-ProtectionThis electric hand warmers are UL certified for safety. 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.Instant Warmth, Long-lasting HeatingThis hand warmer with 10000mAh large-capacity battery and dynamic thermal balance technology. Fast heat transfer, quick preheating within 2 seconds. Heating time can be up to 14 hours. 3 temperature levels 104 (40) / 122 (50) / 140 (60), bringing you warmth throughout the winter. Type-C input and output interface, support charging of various mobile phones. When you go out, you can warm your hands without worrying about the battery of your mobile phone.Ideal Gift for AllPerfect for chilly commutes, outdoor fun, or warming up at home and office, this USB hand warmers make thoughtful winter gifts for men or women who feels the cold. Perfect for Christmas, birthdays, or any occasion. Material:Flame retardant PC+ABS aluminum alloyBattery Description:Lithium-PolymerBattery Capacity:10000 Milliamp HoursIncluded Components:10000mAh hand warmerUpper Temperature Rating:1.4E+2 Degrees FahrenheitItem Package Dimensions L x W x H:5.75 x 4.06 x 1.73 inchesPackage Weight:0.29 Kilograms