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Speaker design with telescopic straw for inspiration, the biggest bright spot is to change the traditional speaker button to adjust the volume approach to stretching up and down the length of the speaker to adjust the volume, stretching the length of the longer the greater the volume. Bottom features a USB interface can be connected with the phone, the freedom to choose to play music in addition to the telescopic design easy to carry, travel or business trip just need to be compressed to a minimum length, saving space and easy to enjoy music.
SHAN DONG UNIVERSITY OF SCIENCE AND TECHNOLOGY