I'm lost, Google translate's lost.... Let me see if I get what you're asking about... Are you looking for information about a 4th speaker and microphone for use outdoors or as an accessory connected outside the phone to use?
yes which one bud.. to use outdoors in that setting with all the ambient noise that is outdoors. or as an accessory/alternative to the factory installed hardware speakers and microphone for using instead of or addition to?
