Thanks a lot Proxus!
Yes, I know that the custom made headsets are expensive.
However, I am really interested the built in mic with custom made ear mold.
I hear that the Tbone Aviation was closed and no longer exist, because the website cannot be opened!
You mean Tbone was really closed?
Anyway, I will have a look on freecom 7000 pilot headset.
Any other similar product with Tbone are still exist in market?
Thanks for recommending.