This new smart ring wants to change how you track blood pressure

TL;DR Health tech startup Vital Signals has announced the Signal Ring, a $399 smart ring claiming to deliver direct systolic and diastolic blood pressure readings without a traditional arm cuff or calibration setup. Launching without a subscription model, this smart ring claims to track continuous fluctuations and overnight trends to compete with established rivals like the Oura Ring 5 and RingConn Gen 3. Pre-orders are currently open and include a sizing kit.