Warm Winter Gifts-Hotdot portable hand warmer, with its special coating treatment, offers a smooth and delicate touch, paired with exquisite holiday themed packaging, making it an ideal gifts choice for friends and family during Thanksgiving, New Year, Christmas, and other important festivals.

Unique Thermochromic Greeting Card-Battery operated heater is not just a little helper against the cold, it is also a messenger of warmth. Record your warm wishes with the included thermochromic card, and as the recipient holds the handwarmers and feels the warmth, your blessings will gradually appear, like a ray of sunshine in winter, bringing additional warmth and joy to the festival.

Long-lasting Endurance & Rapid Heating-Our electric hand warmer, equipped with a 6400mAh large-capacity battery, can heat up in just 1 second, providing up to 20 hours of continuous warmth, ensuring your hands stay comfortably warm all day long.

Three Temperature Settings-This hand warmers rechargeable offers three temperature settings, with a temperature range from 104°F to 131°F, meeting the personalized needs of different users for warmth comfort. The built-in intelligent temperature control chip precisely controls the temperature, preventing overheating, ensuring a stable and safe warm effect.

NTC Precise Temperature Control Technology-Featuring advanced NTC precise temperature control technology, our hot hands hand warmers prevents overheating and maintains a constant ideal temperature, bringing you an ultimate comfortable heating experience. It is an ideal accessories for winter work, dog walking, camping, hunting, golfing, or any other outdoor activities.