Hands free photo

[Celt]

Hi seems all I do is ask questions sorry to bug going to try keep the head unit if I can get enough things working , got the radio working can get into the 100 s so enough stations, got the dvd , got the I pod so can play music from phone , not tried android phone yet on that so hope so , 

Is there a way of having hands free through radio it has a microphone fitted so must be ,cannot work out how to connect by bluetooth,is there a after market kit that can be fitted any help appreciated 

[Devon Aygo]

Bit of Googling found this: https://jpn.pioneer/ja/support/manual/navi/15cyber/  and this https://jpn.pioneer/ja/support/manual/manual_pdf.php?m_id=12190 and this https://jpn.pioneer/ja/support/s-manual.php?main_cd=001&model=&product_no=00006744&sort=1&bmp_type=AVIC-ZH0999&disp=s-year.php

Just need to swat up on your japanese