> BLE transmitter to trigger voice input on a watch

I suggesting triggering input on a watch, not voice recording on the ring. In my suggestion the ring would be a ‘dumb’ input device.

I see. However that misses the point of always having the function at hand, 24/7/365. There will be the off time when you remove the watch to charge it for instance, or times when it may be inconvenient to wear a watch.

Your use case would be another product, likely with a different audience.