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There is a button in the front,a LED and a 3.5mm earphone connector at one side.
A short press-another music.(We use random play to make sure every music in the list is played for one time in one Random circulation)
Two short presses-the previous music.(When playing the the first music of a list.It means"The previous List" as well)
3.Power on- any press when the earphonr is connected.
Power off-take out the earphone
4.Automatically volume adjusting
We use a sensor to adjust volume automatically.
Users can set different mathematical model of volume control in Mac or PC.
Changchun Institute Of Technology
Tong liao No.5 senior high school
TianYicheng Shi xU