【Safe to Use】Certificated with CE,FCC. Made of high-tech aircraft-grade aluminum and ABS material, eco-friendly polymer battery. Shockproof, Anti-scald, Anti-skid, Explosion-proof.

【Double-sided Heated】 3 different heat settings heat up within seconds. There are three different temperatures [104~113°F(40~45°C)], [113~122°F(45~50°C)], 122~131°F(50~55°C)], it reaches the temperature you want very quickly. 3 indicator lights keep you informed of the remaining battery and heating status.

【Portable&Convenient】Wattne USB rechargeable hand warmer with pocket-size and skin-friendly material finish to fit adult's palm, easily held with one hand, designed for traveling, sports, fishing, hiking, camping, and skiing portability, especially perfect for outdoor or indoor activities.

【Large Capacity】5200mAh capacity can give meet the most demand to give a full charge to mainstream digital devices on market, for iPhone, Samsung Galaxy, Nexus and other Android phone.

【Great gift for your loved ones】 Good winter gift choice for anniversary, Thanksgiving, Christmas & New Year ! Great for winter outdoor sports, camping, skiing, cycling, climbing.