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If you like it should you put a ring on it?
This might be the year of the smart ring - The Verge
Should You Get a Smart Ring?
Oura Ring vs. Ultrahuman Ring Air — which is the best smart ring?
Ultrahuman Ring
There's a big problem with smart rings
Oura Ring 3 at 6 Months: Life With a Wearable That Knows When I'm Sick - CNET
An Apple smart ring could be coming soon
What is a smart ring? - Saga Exceptional
Smart rings have a long way to go - The Verge