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Thermostat tumbler / Thermostat tumbler

Thermostat tumbler
Thermostat tumbler

This product is a tumbler that can be temperature control using the thermoelectric devices.
If you rotate the bottom of the container on the left you can drink warm water to warm themselves.
When you want to eat the cold water, and rotate to the right at the bottom of the container,
it is possible to drink cold water by absorbing heat.

University

hannam university

hannam university
Daejeon, South Korea

Dowon Oh,
hannam university