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 Stylish Finnish-American smart ring company Oura may be the darling of wearables, adorning the fingers of celebrities and sportspeople, but it is not resting on its laurels as it heads towards an IPO later this year. This week it launched the world’s smallest smart ring, the Ring 5, its latest evolution of the device that defined a whole category. The Ring 5 is 40% smaller and with longer battery life than the highly popular Ring 4. It also promises to squeeze the health-tracking features of a smartwatch into a less techy piece of jewellery just 2.28mm thick, focused on sleep, stress, readiness and heart health. “The [Ring 5] is the most capable wearable we’ve ever made – small enough to fit seamlessly into everyday life, and significant enough to set a new standard,” said Holly Shelton, Oura’s chief product officer. Oura hopes this fifth-generation ring, which will cost from £399 (€399/$399/$A649) when it ships on 4 June and requires a £5.99 (€5.99/$5.99/A$9.99) a month subscription, will not only cement its dominant position in the exploding smart ring market but