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Your Oura Ring can’t measure what’s going on in your skull
Oura Ring faces a class-action lawsuit alleging deceptive marketing over its sleep-stage tracking claims, as the device lacks direct brainwave measurement capability required for clinical-grade sleep staging.
Aug 26, 2026
Sources: smart ring maker Oura and some of its backers seek to raise up to $3B in a US IPO that could take place as soon as September and value it at over $16B (Bloomberg)
Oura Health Oy, a Finnish smart ring company, is preparing a US IPO targeting up to $3B in proceeds and a valuation exceeding $16B, potentially as early as September.
Aug 25, 2026
Vital Signals launches the $399 Signal Ring, which provides systolic and diastolic blood pressure readings without the need for the traditional arm cuff (Chris Welch/Bloomberg)
Vital Signals, a three-year-old startup, launched the $399 Signal Ring—a wearable smart ring claiming clinical-grade systolic and diastolic blood pressure measurement without an arm cuff.
Jul 16, 2026