The Short Version
Oura filed patents for a modular smart ring with clip-on attachments that could add sensors or battery life without permanent bulk.
Oura filed patents for a modular ring design where clip-on attachments could temporarily add sensors or extra battery life without making the ring permanently larger. The concept is clever: wear a slimmer ring daily, then snap on more hardware when you need it. But patents describe ideas, not shipping products, and the manufacturing challenge of fitting precise electrical contacts into something worn on a finger is genuinely hard. Oura has not announced a timeline.