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For a long time / phonecase

For a long time
For a long time

This phonecase has a built-in steel dust.
Be bumped among themselves for shake the phonecase.
Than warm up the phonecase and turn red.
Resultingly you can phone call for a long time in cold winter.

University

Dong-eui Univ.

Dong-eui Univ.
Busan, South Korea

Design

Dong-eui Univ.

Dong-eui Univ.
Busan, South Korea