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Bottle speaker / speaker

Bottle speaker
Bottle speaker

people lisen music while riding a bike.
But often used as an outdoor speaker because of the danger when wearing the earphones. Bottle speaker propo ses enhanced usability and portability of outdoor speakers.

University

Hoseo university

Hoseo university
Asan-si, South Korea

BoSoon Kang,
Hoseo university

SeoJI Sun,
Hoseo university

Geonhyeong Kim,
Hoseo university

JuHee Jo,
Hoseo university