Two-in-one Usb Portable Double-sided Quick Heat Split Hand Warmer

Product information:
Heating Method: regenerative type
Power type: USB
Color: pink, black
Material: ABS aluminum alloy
Battery Type: 18650 lithium battery
Charging Specification: DC5V/1A
Temperature Specification: 40 ℃-45 ℃-50 ℃
Charging time: 3 hours
Usage time: 1 gear: 22h, 2 gear: 14H,3 gear: 9H