NA:EUM — smart ring platform
A titanium ring that keeps your health data flowing throughout the day — heart rate, blood oxygen, respiration, temperature and sleep, tracked continuously.
Your AI Assistant makes sense of those signals and turns them into something clear enough to act on.
Scroll — six things it does that a wristband can't.
01 — Wearing it
A polished titanium body with a seamlessly sealed, integrated sensor design. Made to stay with you through sleep, showers and workouts — without getting in the way.
Because continuous sensing starts with a ring you can wear all day.
02 — The side that faces you
Optical sensing and a skin temperature sensor sit against your finger, capturing signals too subtle to feel.
Heart rate and HRV run continuously. Blood oxygen and changes in blood flow are read together, for a deeper view of how your body shifts across the day.
The same signals are designed to support deeper insights, including blood pressure trends and post-meal metabolic response.
03 — Charging
Contact-free wireless charging, so there are no exposed charging contacts on the ring. Simply place it in the case to recharge.
With its own built-in battery, the case can power your ring several times over, wherever you go.
More time wearing it.
Less time thinking about charging.
04 — Inside the case
Charging is wireless, so the ring carries no contacts to corrode and no pins to line up. Twenty parts make that possible, and all twenty of them are in the case.
Housing, boards, optics and tooling are ours — designed here, and made here.
05 — AI Assistant
The reduction happens on the ring itself. Raw signal is turned into the few values that carry meaning at the place it is measured, so what leaves is a fraction of what was sensed — and the part worth keeping.
Your AI Assistant reads that against the baseline it has learned from you, and answers in a sentence rather than a chart.
The ring senses.
Your AI Assistant makes sense of it.
The app
Sensing happens on your finger. The app is only where the result reaches you — a measurement as it is taken, a word when something changes, and a report you can read in a single pass.
Measuring · now
bpm
Today so far
Reduced on the ring · 0.4 kB sent
The ring does not wait for your phone. It measures around the clock and reduces the signal where it is taken, so the app opens onto work that has already been done rather than starting it.
Leave the phone behind and nothing stops. What was sensed while you were away is waiting when you come back.
Daniel Whitfield
NA-0431 · enrolled 12 Jul
Nominal
PPG · live62 bpm
Heart rate · 24 h68 mean
0006121824
SpO₂ · 24 h97.9 %
001224
Blood pressure · 14 d+4 %
Trend estimate from PPG — not a blood pressure measurement.
Metabolic · post-mealModerate
Estimate from PPG — not a blood glucose measurement.
Activity · 7 days8,240
MTWTFSS
Partner console The same signal, at fleet scale. A deployment reads device health, signal uptime and cohort trends in one place. Because each ring reduces before it sends, a thousand of them cost a fraction of what raw sampling would.
21:36
Tuesday 4 September
NA:EUMnow
Your resting heart rate is up.
8 bpm above your own baseline, three nights running.
NA:EUM2h
Recovery is back where it was.
Alerts Told when it matters. A change is measured against your own baseline, not a threshold set for someone else — and it arrives as a sentence you can act on.
Fall detected · 21:04
Are you okay?
If you don't answer, we will call the contact you set.
Calling in 0:18
I'm okay Call now
Safety Help, without reaching for it. The fall is caught on the ring itself. If no one answers, the call goes out on your behalf — no phone in a pocket required.
Health report
DailyWeeklyMonthly
You slept 41 minutes less than your usual week.
MTWTFSS
Reports Daily, weekly, monthly. The same data at three distances: what happened today, what the week did to you, and what has been drifting for months.
AI Assistant
Every reading is measured against the baseline the ring has learned from you, and it comes back as one sentence with one thing to try. The suggestions are about habits — when you eat, how much you move — and never about treatment.
AI Assistant
Post-meal response· 14 days
NA:EUM
Later dinners take longer to settle.
On the five nights you ate after 21:00 the curve stayed raised about forty minutes longer than usual. On the nights you walked afterwards it came down sooner.
Show those nightsRemind me at 19:30
Read from14 days · 21 meals · your evening walks
Estimate from PPG. Not a blood glucose measurement.
Nutrition It notices what your meals do. Post-meal response is read against your own baseline, so the suggestion is about your evenings rather than a rule written for everyone.
AI Assistant
Blood pressure trend· 14 days
NA:EUM
Your trend has been drifting up.
Nine days above your own baseline. It sat lower in the fortnight you averaged over 7,000 steps, and you were sleeping forty minutes longer then.
Compare the two weeksNudge me to move
Read from14 days · steps · sleep duration
Trend estimate from PPG. Not a blood pressure measurement.
Circulation It ties the trend to what you did. A drifting trend is only useful beside the behaviour around it — the steps, the sleep, the weeks it ran lower.
AI Assistant
Activity· today
MTWTFSS
NA:EUM
You are 2,100 steps short of your usual Tuesday.
Recovery has been slower on your short days: HRV ran about six milliseconds below baseline on each of the last three. Twenty minutes on foot would close it.
Plan a walkAdjust my goal
Read from3 short days · HRV · your Tuesday average
Based on 42 days of your own data.
Movement It asks for the smallest useful change. One walk, not a programme. The target is your own average rather than somebody else’s number.
Both the app and the partner console shown here are design concepts. Screens, wording, device identifiers and figures are illustrative; the shipping software may differ. NA:EUM is a wellness product and its data is not for diagnosis.
Designed for continuous sensing, day and night
Heart rate · HRV · SpO₂ · respiration · skin temperature
US 6–13
With additional power from the charging case
* Battery life varies depending on usage and sensing configuration. Adjusting sensing frequency and features to match your needs can help optimise battery life for longer use.
What it does
It continuously tracks the health signals that matter every day — from heart rate and sleep to blood oxygen and temperature. Over time your data builds a personal baseline, turning individual readings into a clearer understanding of how your body changes and responds.
Core sensing
Heart rate
Continuously tracks how your heart rate changes through the day.Heart rate variability
Reads the subtle beat-to-beat variation that reflects recovery and readiness.Blood oxygen
Follows changes in blood oxygen to build a broader picture of respiration and recovery.Respiration
Analyses breathing patterns and how they change, including through the night.Skin temperature
Tracked against your personal baseline rather than a single isolated reading.Sleep stages
Combines physiological and motion signals to follow light, deep and REM sleep.Activity & steps
Everyday movement and activity, read from the motion sensing built into the ring.Stress & recovery
Heart rate, HRV, sleep and activity brought together into daily strain and recovery.Resting heart rate
Your baseline heart rate through periods of rest, and how it moves over time.Sleep duration & regularity
How long you sleep, and how consistently you hold to the same rhythm.What sets it apart
Specifications
Two halves of one product. Confirmed figures and design targets are marked apart, so you always know which of the two you are reading.
| Sensors | PPG — multi-channel LEDs · skin temperature · accelerometer |
|---|---|
| Metrics | Heart rate · HRV · SpO₂ · respiration · skin temperature · sleep stages · activity · stress and recovery |
| Estimated metrics | Blood pressure trend · post-meal metabolic response — from PPG |
| Safety | Freefall detection, on-ring |
| Sampling | Continuous, 24/7 |
| Battery | Up to 7 days — varies with usage and sensing configuration |
| Water resistance | 10 ATM — design target, validation pending |
| Material | Titanium — silver, gold, black |
| Sizes | 8 sizes, US 6 to 13 |
| Weight | 3 to 5 g — design target, varies with size |
| Connectivity | BLE 5.4 |
| Charging method | NFC WLC — wireless, no contacts on the ring |
|---|---|
| Case battery | 250 mAh |
| Full charge time | 90 minutes — ring, in the case |
| Input | USB-C |
| Dimensions | 54.3 × 58.9 × 26.7 mm |
| Material | ABS body, acrylic window |
NA:EUM is a wellness product. Blood pressure trend and metabolic response are estimates derived from PPG, not diagnostic measurements.
Enquiries
Two ways in. We build the whole product — mechanical design, biosensing, firmware, tooling and production — or we license the sensing algorithms and firmware into a form factor that is already yours, ring or otherwise. The fastest first conversation is the one where you send us the constraint that worries you most.