Low power electronics are all about low duty cycles: if it can be worn but asleep and drawing next to no power for 15 hours and 59 minutes, and recording audio

Low power electronics are all about low duty cycles: if it can be worn but asleep and drawing next to no power for 15 hours and 59 minutes, and recording audio for 60 seconds, they only need enough battery to run the processor for 60 seconds. No one is using the thing like a dedicated microphone to record their entire day's audio, it's a note-taking tool.