Oura

Harpreet Singh Rai is CEO of Oura, a Finnish company launched in 2013. Oura’s lightweight ring, which is designed to be worn all day, evaluates sleep and activity to give its wearer minute details about their health and wellbeing. Metrics such as heart-rate variability, respiratory rate and body temperature can be discreetly measured through a growing number of wearables, including Oura, in a market that was valued at more than $37bn (€31bn) last year and is forecast to top $100bn (€85bn) in 2027. See omnystudio.com/listener for privacy information.