Overview
- Vital Signals announced the Signal Ring on Thursday, July 16, and opened pre-orders at $399 with a sizing kit and expected shipments in October.
- The company says the ring delivers direct systolic and diastolic readings from the finger without an arm cuff or repeated calibration and that it reports continuous changes using a mean arterial pressure metric.
- Signal Ring measurements are processed in the cloud rather than on the device and the company cites an internal trial of thousands as evidence for its accuracy.
- Independent clinical validation and any regulatory clearance have not been reported, and the American Heart Association warned in December 2025 that cuffless tools are not yet reliable for diagnosis or treatment.
- The ring is a focused, premium device with a titanium shell, inside sensors, about five days of battery life, no subscription, and it could expand options for people who need regular blood-pressure checks if outside testing and regulators confirm the claims.