Three-stage temperature adjustment with a waterless graphene heating system delivers warmth quickly, reaching heat in about 3 seconds. Safe use is ensured by a soft flannel exterior that enhances thermal insulation and provides reliable warmth for outdoor use. Overheating protection is built in via an intelligent temperature control chip, offering overheating, short circuit, and overload protection for safer operation. Revolutionary temperature control features an intelligent system that improves heating performance to suit different needs. It increases heat comfort twofold with wider coverage from powerful double-sided heating elements and includes a temperature indicator for easy monitoring. Use scenarios - Commuting in cold weather: keep your hands warm at bus stops, train stations, or waiting outdoors. - Outdoor activities: hiking, camping, or skiing where quick, reliable warmth is beneficial. - Outdoor work or events: construction sites, photography shoots, or long periods outdoors in chilly conditions.