Worried About Your Blood Pressure? A $399 Ring Wants to Measure It Without Ever Using a Cuff

New wearables aim to help you track your blood pressure. The Signal Ring from Vital Signals has an especially bold approach.

Illustration: Inc.; Photo: Vital Signals

Tom Moss was rushed to the hospital a few years ago with a systolic blood pressure reading of 250 mmHg, more than double what counts as healthy. He had no warning it was coming. The dangerously high reading stayed with him and led him to found Vital Signals in 2023 with two cofounders from the sensor company Masimo.

The company has raised more than $15 million to build Signal Ring, the wearable device it opened for preorder in July at $399, with shipping expected in October. The titanium ring reads blood pressure from the finger using an optical sensor, and it displays the result the way a clinic would: a systolic number, a diastolic number. (Systolic is the top reading and should........

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