【Dual Magnetic Design】 Equipped with a strong magnetic connection, the 2*2600mAh hand warmers can be used together for palm-sized warmth or separately in jacket or glove pockets, perfect for sharing or individual use 【Compact and Pocket-Friendly】 With a size comparable to lipstick, it easily fits into pockets or bags. The cylindrical, ergonomic shape is designed for a comfortable grip, providing consistent heat while maintaining blood circulation 【Quick and Comfortable Heating】 Crafted from high-grade aerospace aluminum with a polished silicone surface, these warmers heat up within 3 seconds. Three adjustable heat levels go up to 126℉, and a memory function recalls your last selected heat setting for convenience 【Advanced Safety Features】 Prioritizing safety and quality, this warmer includes advanced safety chips, intelligent temperature control, and durable ABS materials to prevent overcharging, overheating, and short-circuiting. UL/CE/FCC certified for reliable safety 【Perfect Gift for Winter】 Ideal for those who feel the cold easily, from sports enthusiasts to winter commuters, or those needing heat therapy. A thoughtful gift for winter holidays or special occasions, bringing warmth to the fingertips and heart Specifications: Parameter Details Model UT2S Mini Battery Capacity 2600mAh*2 Charging Time 3.5 hours Usage Time 8-12 hours Input Type-C 5V?1A Output N/A Temperature Levels 3 levels: 100-108℉ (38-42℃) / 109-117℉ (43-47℃) / 118-125℉ (48-52℃) Indicator Lights Red/Blue