We are developing our own motorized microphone that will at eTimer's request, put the watch into standard test positions and gather performance data.

This picture is the CAD model, but we have a functional prototype on the bench.  There are still long term reliability tests to be completed, but initial performance is encouraging.

It can also autonomously run through the positions in sequence or randomly to simulate life on a wrist.  

There is even a built in BME280 sensor that enables logging of temperature, pressure and humidity.