Why don't more smartwatches use this smart ring's seemingly obvious trick?

The Ultrahuman Ring Air held in fingertips to show the Ultrahuman logo engraved inside.

Sunday Runday

(Image credit: Android Central)

In this weekly column, Android Central Wearables Editor Michael Hicks talks about the world of wearables, apps, and fitness tech related to running and health, in his quest to get faster and more fit.

I don't typically use alarms because I hate being jolted out of REM sleep, as if the noise punched me awake and left me sullen and sluggish. Waking up on my own isn't usually a problem, but on days I can't risk oversleeping, I'd sure love my phone alarm to have a target wake-up range, using my smartwatch or smart ring data to hold off until I'm in my light sleep stage.