French upstart Circular has unveiled a fresh challenge to Oura the current lord of the smart rings.
The rings sensors have been given a complete overhaul, resulting in more accurate readings, the company said.
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As a result, Circular goes on to call its new ring a discreet heart health companion.
This isnt just a wearable, said Amaury Kosman, Circulars co-founder and CEO.
Its a statement piece that empowers our users to take control of their wellness without compromising on style.

Thats a bit pricier than the Oura Ring 4 ($349).
However, unlike Ouras, the Circular ring is available subscription-free.
If it does prove a success, that wont necessarily be a bad thing for Oura though.
Story bySion Geschwindt
Sion is a freelance science and technology reporter, specialising in climate and energy.