Thank you for your question.
Regarding the two hands-free microphones, we are sorry, but we can not promise to be able to use them at this time.
Of course, we can request them as a prepared item from the OnStage management team to the local organizer. Indeed, we have requested some headset microphones for the past two or three years. However, they were supplied by local organizers only in 2017. Whether you can use them also depends on the type of audio system used at the venue.
At this time, detailed information of the venue for RoboCup 2019 is not provided. Regarding the audio system, it may not be unveiled until we arrive at the venue. So, if possible, could you please prepare to have sufficient performance without handsfree microphone?
We are looking forward to seeing the achievements of your team's activities in Sydney.