Ergonomic Design & Long Lasting Warmth:Made of high-tech lithium battery, aluminum and ABS, once fully charged can use for 4-8 hours.Both sides adopt silicone, it is shockproof, anti-scald and even heat dissipation, completely safe heat transfer. It affects circulation in both hands and feet and helps soothe the pain of Stomach Cramps, Fatigue, Syndrome, arthritic sufferers. Ergonomic design to make you more comfortable, recessed button prevent mistake operating.
2 Mode Simple Switching:Only press and hold the button for 3 seconds to switch from power bank to hand warmer mode. 3 different heat levels free adjustment: low [95-107.5℉ (40~45℃)], medium [104-118.5 ℉ (45~50℃)], high 118.5-130℉ (50~55℃)], let you have more choices. 3 indicator lights keep you informed of the remaining battery and heating status, blue is charging, red is heater.
Fast Heating and Constant Warm:Rapidly heating in 3 seconds, create a warm world for you in the winter.Double-layer heating keeps your hands surrounded by warmth all time.Unique non-slip, sweat-free design, let you get rid of the sticky feeling after sweating.Free gift to you a carrying bag, put it in the bag when the maximum temperature makes you feel hot.An elegant look will be one of the highlights of your wear.