Mini Portable Usb Hand Warmer Mobile Power

Features.
1. The hand warmer is equipped with a battery, which can be used not only for winter heating, but also for saving a dead phone/tablet.2. Electric hand warmer is made of PC and ABS high-strength alloy fireproof material, built-in intelligent chip protection, with overload, overcurrent, overcharge, overvoltage and short-circuit protection, safe to use, suitable for young people, the elderly and children.3. Rechargeable hand warmer with dynamic heat balance technology, rapid heat transfer, rapid warming within 3 seconds, double-sided uniform heating.4. Temperature 42 ℃ / 47 ℃ / 55 ℃ at your choice, for you to contract the whole winter warmth.
Specification:Size: 8*8*3cmRated power: 5WBattery voltage: 3.7VUSB output. 5V/2.1MaxBuilt-in battery capacity:3000 mAMaterial:ABS + PC + silicone + electronic components
Package included.1 x Hand warmer1 x Charging cable
Caution.Due to manual measurement, please allow 0.5-1 cm error. Please make sure you don't mind before bidding.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!