Podcast host and Sifted editor Amy Lewin sits down with Petteri Lahtela, founder of smart wearable company Oura Ring, to discuss how the business has grown to making $500m in revenue, hitting profitability and selling more than 2.5m devices in the process.

They discuss the big idea behind Oura, how Petteri has turned down multiple offers from buyers and how the company is well poised to pounce on the AI boom with the data it holds.