Circular is enhancing the Ring 2 by introducing blood pressure and blood glucose monitoring capabilities. The ring will utilize Pulse Transit Time (PTT) to estimate blood pressure, with this feature expected to launch in late 2025.
Blood glucose trend tracking is slated for introduction in late 2026. At this year’s CES, Circular showcased the Ring 2, its third smart ring, boasting not only design upgrades but also groundbreaking health-monitoring features, including ECG and AFib detection.
Following a successful Kickstarter campaign that surpassed $1 million in funding, Circular has committed to improving the Ring 2 with these two significant health features. The update for blood pressure monitoring is projected for late 2025, allowing users to obtain “spot blood pressure measurements.”
This capability will leverage both ECG and PPG technologies, aiming for greater precision—an unprecedented innovation for smart rings. The device will estimate blood pressure by measuring PTT, the time taken for blood to travel through arteries, with estimations requiring between 30 seconds to 2 minutes.
In addition to blood pressure monitoring, Circular plans to add blood glucose trend tracking by late 2026. Although this feature is still a couple of years away, it promises to analyze light interaction with blood using PPG sensors and advanced machine learning techniques.
However, it’s important to note that this feature will not replace continuous glucose monitors or finger-prick tests. Instead, it is designed to help users understand how their blood glucose levels fluctuate based on their activities, aiding in better decision-making.
On paper, the addition of these health monitoring features positions Circular’s Ring 2 as a leader among smart rings. However, concerns about accuracy linger, and only time will reveal the effectiveness of these advancements.
Currently, the Circular Ring 2 is available for pre-order through Kickstarter, with mass production set for April 2025 and shipments expected to begin in June or July. Users will need to exercise patience as they await the advanced health-tracking tools.
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