Different kinds of wireless earphone Inspection:
Bluetooth wireless earphone
Infrared wireless earphone
Sport wireless earphone
Car wireless earphone

Wireless earphone inspection
Some common factors for wireless earphone quality control:
Quantity check 
Call test
Function test
Aging test
Bluetooth function connection effective distance
Audio left and right channel check
Charge and discharge performance
3M tape test for Logo
Barcode scanning
Internal check
Working current check
Carton dropping test

wireless earphone quality control
Wireless earphone inspection-wireless earphone quality control: Bluetooth, infrared, sport, car


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