About this item 🔥【Hand warmers and power banks 2 in 1】 Hand warmers rechargeable is also a 10000mAh portable charger. It can be fully charged for most smartphones, tablets, Bluetooth headsets and other devices. The led cold light digital display indicator keeps you informed of the remaining power and heating temperature to meet your different needs. 🔥【 High safety】 Electric hand warmer is made of high-tech lithium battery, high thermal conductivity aluminum alloy and ABS high-strength alloy fireproof material. Built-in intelligent protection system, with overload, overcurrent, overcharge, overvoltage and short-circuit protection, safe to use. 🔥【 Instant heating, 12 hours using time】 No need to wait for a long time, usb hand warmer with intelligent polymer chip control system. Double-sided heating up to 125 ° F working temperature, 5 seconds of rapid heating and 3 levels of temperature settings, it can be adjusted to stable comfortable warmth. 🔥【Portable design, unique appearance】Compact and portable shape, fashionable and simple design, exquisite packaging, a variety of colors to choose from. This handwarmers is loved by young women, which is the best choice for winter gift. The portable pocket design is suitable for skiing, travel, hiking, camping and other outdoor sports. 🔥【What you get】The package box will contain a rechargeable hand warmer, a USB cable, the user manual and velvet bag. Our reusable hand warmers has two-year worry-free warranty and 7 * 24 hours of timely and effective customer service. Your satisfaction is our greatest pursuit