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No sound music / Household

No sound music
No sound music

Quieter, more pleasing products, install the instrument quieter, sound the headphones into the ear, easy to practitioners practice anytime and anywhere, don't bother in the same environment, will not interfere with other people. At the same time can make users in practice more ecstasy, more focused.

University

Shandong University of Science and Technology

Shandong University of Science and Technology
Qingdao, China

Mengya Zhao,
Shandong University of Science and Technology