A new version of the TTGO T-Watch is here, and it comes with a microphone. The additional component allows Lilygo's smartwatch to be controlled by voice input, improving its versatility. The new version of the TTGO T-Watch retails for under US$30.00 on AliExpress.
https://www.notebookcheck.net/TTGO-T-Watch-The-customisable-smartwatch-now-comes-with-a-microphone-for-voice-control.524633.0.html