Oura launches Ring 5, the world’s smallest smart ring, as it heads toward IPO
The Story
Finnish-American smart ring company Oura launched the Ring 5, which it calls the world’s smallest smart ring, ahead of an expected IPO later this year. The Ring 5 is 40% smaller than the Ring 4, measures 2.28mm thick, and offers longer battery life while including health-tracking features focused on sleep, stress, readiness and heart health. The company, founded in 2013 in Oulu, Finland, has sold 5.5 million rings across four generations and 150 countries.
Key Facts
- The Ring 5 will cost from £399 (€399/$399/$A649) and require a £5.99 (€5.99/$5.99/A$9.99) monthly subscription.
- It ships on 4 June 2026.
- Oura has approximately 5 million paying subscribers and reported $1bn in revenue in 2025.
- The company is valued at $11bn ahead of its IPO, expected later this year.
- Oura has sold 5.5 million rings since its first-generation Kickstarter launch in 2015.
- The smart ring market saw 4 million devices shipped in 2025, more than doubling each of the past two years, according to FDM CCS Insight.
- Oura has more than 1,200 employees and twin headquarters in San Francisco and Oulu, Finland.
Conflicting Reports
No conflicting reports identified in the source article.
Still Unclear
- The exact date of Oura’s IPO has not been announced.
- The article does not specify the precise battery life improvement of Ring 5 over Ring 4.
Misconceptions
No widespread misconceptions addressed in the source article.
Key Figures
- Holly Shelton, chief product officer of Oura
- Petteri Lahtela, co-founder
- Markku Koskela, co-founder
- Kari Kivela, co-founder
- Ben Wood, chief marketing officer at FDM CCS Insight (analyst firm)
Sources: The Guardian
