I think it would be great if someone in the future could add Voice Chat UI for sending watch voices commands.
The Desktop & Mobile Browsers already supports voice capture from user mic.
I tried to do it myself but it didn't work out.
The command from my Watch Protocol (Y7):
[ZJ*YYYYYYYYYY*NNNN*JXTK,voice type, voice file name, current s voice number, total voice numbers, voice data in binary system]