20Hrs Ongoing Warmth --- Equipped with a 3000mAh*2 battery, these hand warmers are built for long-lasting performance. Once fully charged, they can keep you warm for anywhere between 8 to an impressive 20 hours. Fully charged just 3-4 hours, so you can count on them to provide continuous warmth whenever you need it.

2Sec Rapid Heat & 3 Heating Levels --- Rapid warms up quickly in 2 seconds and releases heat continuously, warming your hands without waiting. Offer 3 distinct temperature settings, ranging from a gentle 104-113°F for a mild, comforting warmth, to 113-122°F for a cozy heat, and all the way up to a toasty 122-131°F. Adjustable levels ensure that you can choose the heat precisely to your needs.

2-In-1 Electric Hand Warmer--- Assemblable snap design, offering versatility warming options. The handwarmers has a snap make them can be used individually or combine them into a single unit. Makes them incredibly flexible for various situations, from warming your hands separately to hot compressing some body parts to eliminate fatigue and relieve pain.

Compact and Portable --- These pocket-sized heater compact and lightweight, easy to hold and carry. They can fit comfortably in your palm, slip into your pocket, glove, or handbag. You'll always carry them around and have reliable warmth on hand, no matter where you go.

Thoughtful Gift for Winter --- These hand warmers are perfect complement for a variety of activities, from outdoor activities like hiking, camping, skiing, or fishing, winter hunting, snow golf, to daily outdoor work in colder weather. Whether it's for birthdays, Christmas, or holiday celebrations gifts, these hand warmers are a thoughtful and practical choice.