★★★★★
Tracks everything I need
So pleased, it tracks heart, blood pressure and stress. No subscription either.
Flash sale
BND One
Serious health tracking. Honest pricing.
BND One delivers accurate sleep, heart health, and activity tracking, at a fraction of the price. Own your health data without nightly charging or hidden monthly fees.
- 30-day refund policy
- Free worldwide shipping
- Free app included
- Ships by Aug 17th
Quantity
Choose your optional add-ons:
Extra wristband
£14.95
£9.95
Add extra straps in different colours. Tap a colour to add it, tap again to remove it — you can select more than one.
Ivory
Silver
Black
Dusty Rose
Olive Green
Blush Pink
In Stock: UK orders ships by Aug 17th
BND One
£138.00
£69.00
Not satisfied within 30 days? Get a full refund
That's how confident we are in your results. But if you're not thrilled, send it back and we'll refund your purchase.
What you get
- Patterns your GP never sees, because one reading in a chair once a year misses everything that happens in between.
- See how your day-to-day habits move your numbers, not just what a single check-up shows once a year.
- Pick up on patterns that might otherwise stay silent between routine check-ups.
- Sleep insight that goes deeper than hours slept, because poor sleep is one of the quiet drivers behind your numbers.
- Understand what's actually behind how you feel, day after day, instead of guessing.
- Keep what's working, drop what's quietly pushing your numbers the wrong way.
- Every signal, heart rate, HRV, sleep, activity, brought together into one view, so nothing stays hidden.
"I finally see what's happening between my check-ups, not just a snapshot once a year."
"I've been active my whole life, and BND One still taught me more about my own body in 30 days than years of working with coaches did. It's precise, it's straightforward, and it shows you what's really improving, not just a step count."
BND One relies on 5 LEDs and 4 photodiodes to sample your health data more often than most wearables, giving it lab-tested, third-party-verified accuracy that holds up against the competition. Here's what those sensors keep an eye on:
- Non-invasive Blood Glucose (NEW)
- Blood Pressure Insights (NEW)
- Medical Grade Heart Rate
- Heart Rate Variability (HRV)
- Blood Oxygen Levels (SpO2)
- VO2 Max
- Sleep Stages (Light, Deep, REM, Awake)
- Activity Levels & Movement Patterns
- Multi-sport Tracking
- Women's Menstrual Cycle Management
From there, our AI turns all that raw data into insights you can actually act on: whether your habits are speeding up or slowing down aging, and whether there are any early signs something's off, so you can make choices today that add up to a longer, healthier life.
-
1
Put it on and forget about it
BND One rides comfortably on your wrist around the clock, quietly logging heart rate variability, sleep stages, recovery depth, blood oxygen, skin temperature, activity, and strain.
-
2
Check the app first thing
Open the app to see what's going on inside your body and how yesterday's choices are showing up in today's numbers.
-
3
Get a plan built for you
The app turns your data into clear, specific steps for better recovery, sleep, energy, and long-term health — no subscription needed, it's all included.
-
4
Watch the trend line
Follow how things shift over weeks and months, so you know for certain your habits are paying off, not just going in circles.
Looking for more information?
The JCwear app is free for all BND One members, giving you access to core metrics like your Metabolic Capacity, Metabolic Momentum, and early chronic illness detection insights.
Everything you need to understand your data is included at no extra cost, with no required subscription to see your core health metrics.
Most wearables count steps. BND One is built to give you a complete picture of your long-term health, connecting your biomarkers into one clear view, so nothing gets missed and nothing sneaks up on you.
- Wear It Anywhere: Comfortable enough to wear non-stop thanks to durable, flexible bands, designed to be worn off your wrist 24/7.
- Waterproof: The BND One sensor is IP68 dustproof and water-resistant at depths up to 1 meter (roughly 3.2 feet) for up to 2 hours, so you can continue to capture your data with zero interruptions.
- Sensors: 5 LEDs and 4 photodiodes capture your data more often than most wearables, providing best-in-class accuracy validated in lab studies and with third-party testing.
- Battery Life: Up to 14 days of battery on a single charge.* Typically charges in 20-80 minutes, depending on battery level.
- Connectivity: Bluetooth® Low Energy. Automatic firmware updates via the JCwear app. EMF-safe. Allows airplane mode. FCC-certified.
- App: Free JCwear app included to track all metrics.
Is the JCwear app free? Yes, core health metrics are included at no cost with every BND One.
Does BND One replace my doctor? No. BND One is designed to help you spot patterns early and stay informed. It's not a substitute for professional medical advice or diagnosis.
Can I add extended protection? Yes, 3-Year Protection is available as an optional one-time add-on at checkout, not a subscription.
- Free Shipping: Free worldwide shipping on every order.
- Returns: 100% Satisfaction Guaranteed. We accept returns within 30 days of receipt for a full refund.
- Not sure yet? That's exactly why we offer a 30-day trial, try BND One risk-free. For details, see our Refund & Returns page.
40,000+ People Have Joined The BND Movement
DAILY HEALTH INSIGHTS
One wearable. A full
view into your
Health.
Your body gives off signals all day, from your heart rate to your blood pressure. BND One brings the ones that matter into one clear view.
TRENDS OVER TIME
See Your Body's Patterns
See how your readings move over time, not just one moment.
MORNING & EVENING
Morning and Evening Checks
A simple daily habit that builds a fuller picture than one reading.
BUILT AROUND YOUR ROUTINE
See What Affects Your Body
Spot how stress, salt or a short walk affect your blood pressure.
KNOW YOUR NUMBERS
Small, consistent checks twice a day build a clearer picture of your health over time
BND One turns your daily readings into patterns you can actually understand and act on.
Small, everyday habits add up. Seeing them clearly just makes it easier to keep going.
One wearable,
a clearer view
BND One tracks the signals behind your everyday health, so you can see how your daily choices show up over time.
See more than just today's numbers
SpO2, HRV and blood pressure readings, tracked around the clock, so you always have the bigger picture, not just one moment.
Understand your everyday energy levels
See how your body's energy and effort levels change from day to day, based on real readings, not guesswork.
A clearer picture of your sleep, every night.
Sleep stages logged automatically while you rest, so you can see how you actually slept, not just how many hours.
One band, wherever your day takes you.
Recognises what you're doing, from a walk to the shops to a light workout, and logs it automatically.
Heart rate tracked, all day long.
Heart rate, steps, distance and calories logged automatically, around the clock, all in one view.
Built to keep up with you, day after day.
Menstrual cycle tracking, HRV and stress monitoring, all running on a battery that lasts up to two weeks, not days.
Most trackers just report your numbers. BND One helps you understand what they mean.
BND One brings your signals together in one place, so you always know where you stand today, not just what happened yesterday.
A 14-day battery and built-in sensors, made for comfortable, round-the-clock wear
Blood pressure and heart rate, brought together in one simple view
Two quick checks a day, morning and evening, build a picture no single reading ever could.
Every reading saved automatically, so you can look back whenever you want, not just today.
EVERYDAY HEALTH
Small habits,
built for your
everyday health
Pattern Tracking
Picks up on changes in your readings over time, so you can see the bigger picture, not just today's snapshot.
Morning & Evening Checks
Two quick checks a day build a clearer picture than any single reading.
Always-On Tracking
Running quietly in the background around the clock, so you don't have to think about it.
Blood Pressure Insights
Tracked every day, without a cuff and without a clinic visit.
Built for a clearer view
of your everyday health
BND One runs up to 14 days on a single charge. Two quick checks a day give you deeper insight into your blood pressure and everyday health, tracked simply over time.
Buy Now
★ Trustpilot Reviews
Excellent · Based on 2,955 reviews
★★★★★
Genuinely useful, not just numbers
Sleep stages line up with how I feel. The HRV trend flagged a cold two days before I felt it.
★★★★★
What a fantastic bit of tech
Was sceptical at first, but this blew me away for the price. So comfortable I don't register it's on. 10 out of 10.
★★★★★
Covers all what I need
Looked at a lot of fitness watches, this was the best. Covers blood pressure too. Barely know I'm wearing it.
★★★★★
No paywall on my own data
The app is clean and readable. No subscription paywall on my own data, that's rare, and why I recommend it.
★★★★★
Great product & customer service
Bought a second band for my son because I've been so happy with my own. All the metrics, no ongoing subscription.
★★★★★
Excellent no nonsense device
Easy to set up. Long battery life, shower and swim proof.
★★★★★
No monthly fee
Love that there's no monthly fee. Sync was laggy on launch day but an update the week after fixed it completely.
★★★★★
Did exactly as advertised
Monitored all my biometrics plus gave accurate blood pressure results. Couldn't ask for more, and there are different colour bands too.
★★★★★
Great product
Very helpful customer service. The support agent sorted my query promptly, keep up the good work.
★★★★★
Spot on during workouts
Heart rate is spot on during exercise. Sleep detection occasionally logs time in bed as light sleep, but the trends hold up.
★★★★★
Customer service was great
Especially the agent who dealt with my problem and solved it, replying quickly back to my emails.
★★★★★
Great experience so far
Support answered my queries almost instantly. My experience with the band so far has been great.
★★★★★
Exceptional customer service
Very professional and polite working to resolve my issue. Genuinely impressed with how it was handled.
★★★★★
Simple and reliable
Setup took only a few minutes and it's been working perfectly ever since.
★★★★★
No hassle at all
Had a sizing question and got a real human reply within hours. They sent a free replacement, no hassle at all.
★★★★★
Went above and beyond
Didn't know how to set it up, but support went above and beyond to help me through it.
★★★★★
Delivery was quick
Took a day longer than the estimate, but they emailed proactively about it, which I appreciated.
★★★★★
Free app, no subscription
A band similar to others that cost more, with a free app and no subscription needed.
★★★★★
Super impressed with the device
Turning 50 made me more aware of my health, this helps me know what's happening on the inside.
★★★★★
Would recommend to friends
Support responded quickly and told me exactly what to do. Very pleased so far and would recommend it.
★★★★★
Comfortable enough to forget
Wear it swimming, wear it sleeping, never had a reason to take it off. That says enough.
★★★★★
Fixed a sync issue in a day
Reported a Bluetooth drop-out and had a fix pushed to the app within 24 hours. Didn't expect that speed.
Frequently Asked Questions
What makes BND One different?
BND One is built for everyday health, not just fitness. It tracks blood pressure, sleep and stress, and brings it all into one place so you can see your own patterns over time.
When should I take the Band off?
You can keep your BND One on most of the time, including sleeping, showers, washing dishes, ice baths, cold weather, workouts, and hot weather. However, saunas and steam rooms may damage the sensor, so it's best to remove it.
Do I need a subscription to use the band?
No subscription is required to use the Band or access your raw data.
Is the Band waterproof or sweatproof?
Yes. BND One is IP68 rated, meaning it's dustproof and water-resistant up to 1 meter (3.2 feet) for up to 2 hours. Perfect for showers, swimming, and workouts without interruptions.
What wrist size does the Band fit?
The band features an adjustable strap that fits up to 24cm (9 inches) comfortably. Can also be worn on your ankles within same measurements.
Is the Band compatible with my phone?
Yes. BND One works with: iOS Devices: 1. iPhone 8 and newer 2. iOS 14.0 and above. Android Devices: 1. Android 8.0 (Oreo) and above.
Is my health data secure?
Yes. Your health data is: 1. Encrypted end-to-end 2. Stored on EU GDPR-compliant servers 3. Only accessible to you. We prioritize your privacy and never sell your data.
What is your return or refund policy?
We offer a 30-day money-back guarantee. If not satisfied, return in original condition for a full refund.