TWS works as follows: STEP 1: Turn both Bluetooth Speakers on STEP 2: Rapidly Press main button for 2 times. The two speakers will be paired and you will hear a paired tone (LED Light: flashing blue turns solid) STEP 3:Open Bluetooth setting on your device and check that you are paired and connected to ONE of the two airplane speakers (Model:M3 or Neochrome). Music should now play from both speakers. Note: If you have any dropouts or don't hear music from both speakers, pause the music for 5 seconds then press play again. Or repeat below pairing process again.