Weighing just 2 grams and measuring a mere 2.2 mm in thickness, the device packs big features into a tiny frame. To analyse the user’s health, the ring assesses seven biometrics and 142 derived markers. These markers are captured by a suite of sensors.
In the Circular Slim Ring, the PPG combines three different LED light wavelengths — green, red, and infrared — to capture numerous health vitals. These range from heart and respiratory rates to blood oxygen levels.
All readings are then transmitted to Kira+, Circular’s AI assistant, which turns the data into insights and advice.
It appears to have more sensing data available than the Oura Ring, as well as the haptic vibrations in addition too. Its normal price of $275 is also a bit cheaper than Oura Ring’s starting price of $300. Given also they are focussing specifically on accuracy, and they say there is only the one-time ring cost without a monthly subscription (like Oura has), it looks like there is a lot of going for this ring.
Coming out of France, in the EU, we’ll probably also find better respect for the privacy of our data. Right now it only syncs to Apple Healthkit, but they are working on syncing with Google Fit and Samsung Health.
See https://thenextweb.com/news/circular-ring-slim-thinnest-lightest-smart-ring