OCOOPA UT3 Pro Magnetic Rechargeable Hand Warmer & Power Bank.
Longer Lasting Warmth:
With an enhanced 5000mAh x2 rechargeable battery capacity and performance, enjoy 6-15 hours of continuous heat, ideal for all-day outdoor activities. This handwarmer also functions as a power bank, capable of charging your phone over 3.5 times.
Learn more: https://www.amazon.com/OCOOPA-Magneti...