Synchronizing wireless earphones

An apparatus comprising:

• a first acoustic speaker device comprising a first acoustic transducer and a first transceiver, wherein the first transceiver receives and transmits wireless signals;
• and
• a second acoustic speaker device comprising a second acoustic transducer and a second transceiver, wherein the second transceiver receives and transmits wireless signals, wherein the first and second speaker devices communicate wirelessly, and wherein:
• the first and second acoustic speaker devices are for playing audio simultaneously;
• and
• the first and second acoustic speaker devices maintain synchronicity by:
• on an ongoing basis during a timer period that the first and second acoustic speaker device are outputting the audio simultaneously, the first acoustic speaker device transmits wirelessly to the second acoustic speaker device data that comprises (1) digital audio data for the audio to be output simultaneously and (2) synchronization data;
• the first acoustic speaker device transmits wirelessly the digital audio data to the second acoustic speaker via a connection-oriented communication protocol;
• the first acoustic speaker device transmits wirelessly the synchronization data to the second acoustic speaker via a connectionless communication protocol;
• and
• the second acoustic speaker device uses the synchronization data to maintain synchronicity with the first acoustic speaker device.