Cuff free. Continuous. Calming.
Signal Ring measures your blood pressure without a cuff. Ever. Not even for calibration. This avoids the inherent accuracy drift problem and offers more convenience than any calibration based approach. An ultra-fast sensor measures blood flow in higher resolution, showing previously undiscovered details. Get personalized insights into the impact of your lifestyle on your cardiovascular health 24/7 without the anxiety of a cuff.
Blood pressure, simplified
Zen Mode
Staying calm is part of getting an accurate reading. Signal Ring guides your BP reading with posture cues, slow breathing, and calming sound and animation.
Your daily pattern
Your blood pressure doesn't stay still. It rises and falls all day in response to everything you do. Signal Ring keeps track all day in the background without you doing a thing.
Your numbers explained
Every reading comes with the story behind it: what you were doing, how it compares to your normal range, and how today stacks up over time.
How Signal Ring compares
Signal Ring
Standard Cuffs
“Cuffless” Wearables
Health Wearables
No subscription required to access data & insights
Always with you
On-demand blood pressure reading
Background blood pressure monitoring
Cuff-free blood pressure readings
Calibration required
Adds context to blood pressure
Traditional cuffs measure a moment.
A cuff inflates around your arm until it briefly stops your blood flow entirely, then slowly releases, listening for the exact points where flow starts, then fully returns. It can't tell the difference between your true resting number and a temporary spike, from stress, from talking, from the moment itself.
Signal Ring listens continuously.
Every time your heart beats, the shape and timing of your pulse shifts depending on your blood pressure. Signal Ring's sensor picks up those changes directly without stopping or interrupting anything. The ring simply reads what your pulse wave is already telling it.
That's why you can skip calibration.
Signal Ring’s high speed sensor catches detail other devices miss entirely, and our algorithms know the difference between changes in your arterial tone and changes in your actual blood pressure. That's what makes a baseline unnecessary, and calibration a thing of the past.
Why "no cuff" really means no cuff.
Other so-called “cuffless” wearables still hide a cuff somewhere. They read your pulse wave, but only after asking you to take one or more cuff readings to set a starting point to compare against, which drifts out of date, and has to be reset again (and again, and again) to stay accurate.
Find your fit. Take control.
Be one of the first to take control of your blood pressure with Signal Ring by preordering one today for $399*. When you preorder your ring, we’ll send you a sizing kit that arrives by the end of the month. Your Signal Ring and charging case will ship beginning this October when your size is ready. Popular sizes will go fast, so order soon to avoid being waitlisted.
*Signal Ring preorders are fully refundable within 30 days of receiving the ring, minus a $25 non-refundable handling fee.
