[2 Pack Hand Warmers] Not like other comes only one, these hand warmers come as a pair, you can have two portable hand warmers, which can be carried in two pockets of your coat. You can use it with your companions at the same time, you can also use one to warm your hands and the other to charge, which is very convenient. [Smart Safe Heating] Hand warmers made of high-tech aluminum and ABS material, smooth and warm. Its built-in intelligent protection system provides effective protection, won't hurt your skin. The optimized and upgraded circuit ensures its long lifetime, shockproof, anti-scald, explosion-proof, anti-skid and healthy heat transfer. [Reusable & Rechargeable Hand Warmer] Throw away those disposable hand warmers, choose a reusable hand warmer to warm your hands. 10000mAh lithium rechargeable battery ensures a long using time. It also can be used as a power bank to charge your electronic device, rechargeable using the USB cable which is included wherever you are. [Fast Heating & 3 Heat Levels] Hand warmers can rapidly warm up double sides in seconds and instantly release the warmth for you. 3 levels of temperatures 104F(40C)/122F(50C)/140F(60C), you can choose a suitable level to enjoy the warmth. Long-lasting heating supply up to 6-10 hours, provide constant warmth for you. [Portable & Perfect Winter Gift] Smooth and warm surface, pocket-size, sleek and lightweight. Designed for traveling, hiking, camping, skiing, climbing, etc. Especially perfect for outdoor or indoor activities. Its beautifully made and comes with a nice box, the perfect gift for family and friends in winter, to keep you and your lover warm this cold season!