1x usb data line. 【Long-Lasting Heat, Up to 12hrs 】: Choose from three heat settings to enjoy up to 6 hours 2 of warmth at 95-108℉, 5 hours 2 at 109-118℉, or 3 hours 2 at 119-131℉. Perfect for outdoor activities, commuting, or just keeping cozy during cold weather.
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