tech
Oura launches Ring 5, world’s smallest smart ring, as it heads towards IPO
Finnish-US startup has sold 5.5m rings worldwide since it was founded in 2013 and is valued at $11bn

TL;DR
- Oura has released the Ring 5, the world's smallest smart ring.
- The Ring 5 is 40% smaller than the Ring 4, with improved battery life and health-tracking features.
- It focuses on sleep, stress, readiness, and heart health, fitting into a mere 2.28mm thickness.
- The Ring 5 costs from £399 and requires a £5.99 monthly subscription.
- Oura plans an IPO later this year, currently valued at $11 billion.
- The company has sold 5.5 million rings since its founding in 2013.
- Oura is expanding into proactive healthcare with new software features.
- The company has a significant presence with offices in multiple international locations.