Oura Ring 5 debuts as the smallest smart ring ahead of a planned IPO
Oura unveils Ring 5, the smallest smart ring yet—40% smaller than Ring 4 with longer battery life and a 2.28mm profile—focused on sleep, stress, readiness and heart health; priced from £399 and shipping June 4 with a £5.99/month subscription. Ahead of an IPO later this year, Oura has about 5 million paying subscribers, $1 billion in revenue in 2025, and an $11 billion valuation, with expanded software features like health radar and GLP-1 tracking alongside widespread sports and health partnerships.