Unfortunately, I cannot identify an explicit HW ref. on the device. The device has an MFD from 2023-09.
I can only say that the microphones in my ear don't bother me, even when I press the headset against my ear.
I also couldn't understand the bad reviews about the microphone quality in any way.

In general, the ear cup is not necessarily large and the large one in general is not so large either, so the headset is not particularly good for a large drip