The original intention of "winter portable heater" is mainly to solve people's problems in winter.
It is relatively cold, provides a small range of heating, and can be easily carried out.
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For example, a student studies in the classroom in winter because of the cold weather
It means that it is frozen, which makes it difficult for students to write and concentrate on their studies,
If you have this "winter portable heater" beside your hand, you can
Providing heating of half square to one square meter can effectively solve the freezing of fingers.
Problems that affect students' learning.
Portable design, indoor and outdoor travel can be used, USB split battery design,
It can also be used as a charging treasure.