r?the?distance?of?both?is?over?15m Blue?light?flash?slowly:?Matched/dialing/playing?audio.? Blue?light?flashing?rapidly:?call?comingBasic?OperationOperationHeadphone?controlPrompt?toneAnswer?callClick the Multifunction keybuzzing?onceEnding?callClick the Multifunction keybuzzing?onceReject?callLong press Multifunction key?for 1sbuzzing?onceSwitch songslong?press?"+""-"?buttonNOVolume?controlclick?the?volume?button?"+""‐"buzzing?onceBasic?OperationPlay/Pause