Power supply mode: USB
Rated voltage: 5V
Rated power: 7-10
Heating method: self-heating
Hot water bottle material: aluminum alloy
Whether built-in battery: Yes
Built-in battery capacity: 4000 mA or more
Battery life: 1-3 hours
Specifications: 4000 mA, 6000 mA
Fever time: 2 to 6 hours
Other materials: aviation aluminum
Packing list :
Hand warmer
*1
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