Oura’s smart ring uses 20 biometric markers to track sleep ... Oura said it signed partnerships with key retailers such as Amazon and Target this year. The ring is especially popular with ...

French upstart Circular has unveiled a fresh challenge to Oura — the current lord of the smart rings. Circular has just ...

Smart ring maker Oura pocketed an additional $125 million ... It expanded its retail presence globally with new retail partnerships such as Amazon and Target and grew its commercial business ...

Discover the best fitness rings of 2025 for tracking your health and wellness. From sleep to activity tracking, find the ...