the t.bone TWS One A Headset

The transmitter is quite functionnal an practical. The mic is subject to quite some feedback if you have speaker sending sound it its direction. The sound is not exceptionnal but ok for the price. But you can use it differently and then it's quite a good deal.

With a mini-jack to xlr adapter (ground => sleeve, hot => tip, cold => ring) you can hook up any conventionnal microphone that does not require phantom power. With the T.bone mb85 beta it works wonder. You can also send music with the output of a mixer...

You can also hook up li-ion batteries externally if you feel like extending the autonomy. There's an internal converter that accepts a wider range of voltages than the 3.0v of two serial batteries. Haven't tested higher than 4.2v. One li-ion replace two AA in series.