Class-action lawsuit challenges Oura Ring sleep tracking accuracy

The legal action asserts that because the Oura Ring lacks the capacity to monitor brain electrical activity, eye movements, or muscle tone—metrics typically required for clinical sleep assessment—its marketing is deceptive. The document claims the company misleads consumers struggling with health concerns by presenting faulty AI-based inferences as reliable scientific data. Surber, who purchased an Oura Ring 4 Gold for $513.68 in May 2025, argues she bought the device under the false impression that it provided precise sleep monitoring.

Represented by Clarkson Law Firm, the plaintiffs are pursuing damages exceeding $5 million. The suit cites multiple violations, including breach of express warranty and unfair competition under California law. In response, an Oura spokesperson stated the company stands behind its research and accuracy claims, noting that they intend to defend their technology in court while maintaining their commitment to transparency regarding how the device estimates sleep metrics.