【Specifications】 The hand warmer is made of premium ABS and aluminum, built in 10000mAh big battery. Mini size: 3.98”(H) x 2.4”(W) x 1.3”(D); lightweight: 7.4oz/ 210g. There’s a LED screen to show the remaining power. And the cover is textured, easy to hold and comfortable to touch.

【Durable 10000mAh】 The inside 10000mAh battery supports 15hrs long working time at low level, 10hrs for medium level, 8.5 hrs for high level. Compact and durable, the rechargeable handwarmer is suitable to carry with when doing outdoor activities in winter or traveling to cold places.

【3 Heat Level & Double-sided Heating】 Just press the only one button to switch 3 heating levels, no matter the elders or children can operate it easily. The low temperature level: 104-113°F; medium temperature level: 113-122°F; high temperature level: 122-131°F. With double-sided heating, the pocket heater is a nice gift for parents, friends to get warm quickly in all kinds of cold occasions.

【Portable Power Bank】 The portable hand warmers can also be a power bank when you connect the USB output with other electronic devices like iPhone and Android phone via USB cable. But please notice that: the USB Type-C interface is only an input port which doesn’t support to charge other device.

【Safe & Guaranteed】 The mini hand warmer is designed with overheat protection, to keep the temperature always under control when working. Battery protection is provided as well to make sure battery won’t be overcharged if being connected with power beyond due time, and the hand warmer will stop working at once if short circuit happens, just enjoy the warm winter without worry.