10000mAh portable Power Bank Hand Warmers outdoor camping Hand Heater USB Long Lasting Heating Vibration massage LED flashlight(double-sided heating)10000mAh Rechargeable Hand Warmer Adjustable Heat - Design with 3 temperature modes [104~113 (40~45)], [113~122 (45~50)], 122~131 (50~55)], constant heat. Warm up Fast - Rapidly warm up double sides in 3 seconds, press the switch and instantly release the warmth for you. Double-sided and consistent warmth, heating up in 3 seconds, each full charge heating up to 4-8 hours, charging time is 2-3 hours. Reusable hand warmer built-in 10000mAh rechargeable1.double-sided heating, you can choose the best temperature according to your needs, even in the cold days can also make your hands stay warm.2. USB charging is fast and convenient, when the power runs out, just plug in the USB cable,the heating body using ceramic heat dissipation technology, heat retention time can last about 4-12 hours.fast heating up in 3 seconds 40,50,603. 10000mAh 2-in-1 hand warmer, can be carried in one hand, or in a pocket, can be used to warm hands, feet, knees, belly. You can carry it with you during sports, fishing, hiking, camping, skiing, traveling or outdoor sports.4. High-quality & Safety : This hand warmers Made of High-quality ABS and aluminum alloy materials,ertificated with UL,WEEE,CE,PSE,FCC,ROHS and quality inspection.No need to fill water, safe and explosion-proof, automatic power-off protection, intelligent temperature control system to prevent overheat.5. It is the perfect gift for family and friends to spend a cold winter. With vibration massage function