ZEQI Factory direct sales of 3.5mm cell phone in-line tuning in-ear subwoofer headphones

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Copper ring in the center hole, a key line control, beyond the original
Intelligent full compatibility, headset avant-garde dynamic, wearing comfortable and more fitting
Strong and durable wire material, effective anti-interference tension
Can be tested by swinging, bending, pulling, etc.
Good sound quality for your ears to enjoy upgrading