常见问题解答

      If I use as BT receiver can I have a call using smartphone-headphone? Does the mic of smartphone-headphone work or is there any built-in mic?
      Can it charge while being used at the same time?
      Could I use this device as a BT receiver with 3.5mm plugged into jack on a treadmill with built in speakers? And use a BT transmitter plugged into TV
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