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Huang jiayu / bluetooth headset

Huang jiayu

When you want to listen to music and do not bother by the noise around you before going to bed ,you will put on headphones.In many cases,people fall asleep when listening to music.It wasted headphones’ electricity and is bad to our health.This headset allows you to determine the time of closing it before you want to sleep and prevent yourself forgeting to turn off the Bluetooth headset.

University

Shanghai Second Polytechnic University

Shanghai Second Polytechnic University
shanghai, China