Frequently Asked Questions

Signal Ring is a wearable that helps you understand how daily choices may impact your wellness, helping you live a healthier lifestyle. It tracks your pulse, sleep, HRV and blood pressure from your finger with no cuff and no calibration, and it pairs every reading with context so you can see how your numbers move over time instead of reacting to one in isolation.

Signal Ring uses a high-speed optical sensor that reads blood flow at much higher resolution than earlier cuffless devices. That extra detail lets its physiological model separate the signal of your blood pressure from the constant movement of your arteries, so every reading is built from scratch and unique to you.

Background readings are blood pressure measurements Signal Ring takes quietly through the day without any input from you. Because there is nothing to inflate, tracking can happen in the background, presenting you with a graph showing the rise and fall of stress on your arteries from blood pressure  across a whole day in a way a single cuff reading never could.

Signal Ring is a general wellness device to be used for contextualizing your blood pressure readings to help you maintain a healthy lifestyle . Its job is to promote, track, and encourage choices to give you a fuller, more honest picture of your blood pressure between visits, not to diagnose a condition or make the call a clinician makes. Signal Ring is not intended to diagnose, treat, cure, or prevent any disease. Please seek a doctor’s advice in addition to using this app and before making any medical decisions.

Signal Ring is currently equipped to track your pulse, blood pressure, HRV and Sleep. Additional features and metrics will be added in the future. Signal Ring also helps you log activities throughout the day that impact your wellness and contextualizes them alongside your blood pressure readings. 

No. Signal Ring never needs you to first input a reading from a cuff or other device,  and it never will. It builds each reading from scratch using your own physiology, so there is no baseline to set and nothing to keep up to date.

Most cuffless monitors calibrate against a traditional cuff, then estimate your blood pressure by comparing each later reading against that baseline. The trouble is that your arteries keep changing on their own, so the baseline goes stale within hours and the readings drift, which is why those devices ask you to recalibrate so often. Signal Ring reads your arterial environment directly, so it never needs a baseline in the first place.

Signal Ring guides you through each on-demand reading step by step. It reminds you of your posture, coaches you through slow deep breaths, and uses calming music and gentle animations in place of the squeeze and noise of a cuff, so when the reading is complete you can trust the result. You can turn off the breathing exercise and animations in Settings by turning Zen Mode off. 

No. Background readings happen automatically through the day without any action from you. You take a guided reading when you want a precise one on demand, and Signal Ring handles the rest in the background.

Yes. Signal Ring connects to your phone over Bluetooth LE. Due to the complexities of estimating blood pressure you will want to ensure your phone is within range for readings to occur. The Signal Ring app is where your readings, context, and MAP graph live.

Signal Ring is usually worn on your index finger but should work on any finger as long as the fit is good. It comes in sizes 5 to 13 and a free sizing kit so you can find your fit before your ring is shipped.

Every reading comes with context. Signal Ring notes the recent activities that may have affected your result, so you know what your numbers mean. A reading of 125/78 at rest and 125/78 right after a workout are not the same thing, and Signal Ring is built to show you that difference.

Signal Ring has a titanium outer surface and a resin inner surface. It is IP68 waterproof rated (up to 30 minutes in 3 meters of water) and is resistant to rain and handwashing.

Signal Ring is available in sizes 5 to 13. A free sizing kit is included with your order so you can confirm your size before your ring is shipped to you.

The Signal Ring app is available on iOS and Android, and the ring connects over Bluetooth LE. A phone connection is required.

Each Signal Ring order includes one ring and one charging case.

Signal Ring is $399. There is no subscription fee.

Signal Ring ships within the United States only at this time. We'll keep you posted when we will ship outside of the U.S.

Signal Ring is fully refundable within 30 days of delivery, minus a $25 non-refundable handling fee for the sizing kit. You can cancel your order or return within 30 days for a refund on those terms.

View our policy for details: Returns & Refunds

Yes. Signal Ring comes with a 1-year warranty.

No. Signal Ring works without a subscription. You buy the ring once, and the app and its features come with it.

Yes, you can at checkout with TrueMed.

No. Every reading comes from a physiological model built on your own arterial signal, not a machine-learning guess.

Signal Ring does not share your personal data without your consent. We make our revenue from selling Signal Ring, not from selling your personal information.