LKS teach you how to choose the headphones connector jack

As regular overhand headphone or in ear earphone, there has 3.5mm single jack, 3.5mm dual jacks, USB jack.

（1.）3.5mm single jack is used for cell phones, tablet, laptop and PC, for audio/music.

（2.）3.5mm dual jacks, used for PC, when you need talking with someone will use this type headphone, the calling center use such jacks headphone for communication.

（3.）USB connector jack headphone, used for laptop and PC.

Apart from the above, there still has Type-C Jack, mainly use for Apple device such Iphone.

more knowledge about headphones/earphones will come soon.