REXQU CardioBand HRV Tracker
$139.97
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✓ Free shipping✓ 30-day returns✓ Ships in 24–48h
Your Heart, On Record.
CardioBand is a fitness band with heart rate tracking that you put on and forget about — no screen, no notifications, just the record. It is a screenless HRV tracker that brings heart-rate, cuffless blood-pressure and SpO₂ wellness trends, an on-demand ECG waveform, sleep estimates and activity records into the G BAND app.
✓ Free shipping ✓ 30-day return window ✓ Works with compatible iPhone & Android devices
Review personal trends in the G BAND app while wearing a lightweight fitness tracker bracelet without a distracting display. Compare other designs in the REXQU fitness band tracker collection.
Review background heart-rate records and longer-term patterns in the G BAND app.
Compare wrist-based heart-rate variability patterns with your own baseline for general recovery and stress awareness.
View wrist-based blood-pressure wellness estimates; confirm important readings with a validated upper-arm cuff.
Review wrist-based blood-oxygen estimates as general wellness context, not clinical measurements.
Record and review menstrual-cycle information privately in the compatible app.
The listed 220mAh battery supports about 7–10 days of typical use; actual life varies by settings.
CardioBand records background heart-rate data and presents compatible trends in the G BAND app, giving this screenless heart-rate band a simple place to review patterns from rest and activity.
Open the ECG feature in the app, touch the band’s sensor and remain still while CardioBand records its listed single-channel wellness waveform. It is not a diagnostic electrocardiogram and cannot detect or rule out a heart attack or other condition.
Wear CardioBand overnight to review app-generated estimates for sleep duration and stages. These outputs can help with general routine awareness but are not a sleep diagnosis or medical assessment.
HRV describes the variation in time between heartbeats. CardioBand records wrist-based HRV trends that may add context to recovery and stress awareness, but many factors affect the result and one value should not be treated as a diagnosis.
For wellness tracking and awareness — not a replacement for professional medical advice.
CardioBand provides wrist-based blood-pressure and SpO₂ estimates for general wellness awareness. As with any blood-pressure fitness tracker, fit, movement, skin contact and other conditions can affect results, so confirm important blood-pressure readings with a validated upper-arm cuff.
Never change medication or delay care because of a band reading. Use the REXQU blood-pressure numbers guide for general educational context.
The G BAND app provides a private calendar for recording and reviewing menstrual-cycle information alongside compatible wellness data. It is not intended for contraception, fertility diagnosis or medical decisions.
Review estimated steps, calories and supported sport-mode records in the app without checking a wrist display throughout the day.
The listed 220mAh battery supports about 7–10 days of typical use and 15–20 days on standby, with magnetic charging in under 2.5 hours. Actual results vary with enabled features, settings and connection use.
| Feature | REXQU CardioBand |
|---|---|
| Design | Screenless fitness tracker bracelet |
| HRV | Background wrist-based wellness trends |
| Heart Rate | Background trend records |
| ECG | On-demand single-channel wellness waveform |
| Blood Pressure | Cuffless general wellness estimates |
| Blood Oxygen | Wrist-based SpO₂ wellness estimates |
| Sleep | Estimated duration, stages and weekly patterns |
| Cycle Tracking | Private recording calendar in the app |
| Activity | Estimated steps, calories and supported sport modes |
| Battery | About 7–10 days typical use; 15–20 days standby |
| Water Resistance | Listed 1ATM; not for swimming, showering or submersion |
| Compatibility | G BAND app; listed for Android 8.0+ and iOS 13.0+ |
| Price | $139.97 |
CardioBand combines personal wellness estimates and everyday activity records. Its outputs are not intended for diagnosis, treatment or urgent decisions.
Open the compatible ECG feature, follow the app instructions and remain still while recording a single-channel wellness waveform for personal review.
Review HRV, heart-rate and estimated sleep patterns against your own baseline rather than drawing conclusions from one wrist-based value.
Use the screenless design for activity and wellness records while checking compatible summaries later in the G BAND app.
Orders include free tracked shipping and a 30-day return window, subject to the REXQU Returns and Refunds Policy.
The slim, screen-free design keeps compatible wellness and activity records in the app without putting another display on your wrist.
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A receipt is on its way to your email. Your CardioBand ships within 24–48 hours.
CardioBand has a 30-day return window. Eligibility, product-condition requirements and the return process are subject to the REXQU Returns and Refunds Policy.
A wrist band records patterns, not diagnoses. Here is how to read what CardioBand collects, and where the official guidance lives.
Resting heart rate, training zones and what counts as a normal range are set out in the American Heart Association guide to target heart rates. Use that as the reference and use the band to see where your own numbers sit and how they move. A single high or low reading means very little on its own; two weeks of readings means a great deal.
Taking your pulse now and then catches you in one state — usually sitting down, usually calm. An activity tracker with heart rate keeps sampling through work, exercise, stress and sleep, which is where the interesting variation lives. That is the whole argument for a band you never take off. Read how a screenless fitness tracker works and our full screenless tracker guide.
Heart-rate variability differs enormously between people, so a number that is low for one person is normal for another. CardioBand compares each day against your own rolling baseline rather than a population average. Give it two weeks before you read anything into it.
CardioBand estimates sleep stages from movement and heart rate. That is genuinely useful for spotting patterns — late nights, restless weeks, the effect of alcohol — and it is not a clinical polysomnogram. The National Heart, Lung, and Blood Institute covers what sleep loss actually does, and why a screenless band suits sleep tracking explains why no display helps here.
The CDC physical activity guidelines for adults give the weekly targets most people are working towards. CardioBand counts towards them quietly in the background. Battery matters more than you would think for this: see screenless fitness tracker battery life.
More on the range: screenless fitness trackers and bands · screenless blood-pressure bands · screenless ECG trackers · cycle tracking on a wearable · all health smartwatches. Every health statement here follows our editorial and research standards.
HRV means heart-rate variability: the change in time between heartbeats. CardioBand records wrist-based HRV trends for general wellness awareness. Compare patterns with your own baseline rather than treating one value as a diagnosis.
CardioBand syncs compatible heart-rate, HRV, wellness-estimate, activity, sleep and cycle data to the G BAND app over Bluetooth. Available records can depend on app settings, permissions and wearing conditions.
No. CardioBand's cuffless blood-pressure output is a general wellness estimate and should not replace a validated upper-arm cuff or medical assessment. Never change medication or delay care because of a band reading.
CardioBand is listed with an on-demand, single-channel wellness waveform. Keep still and follow the app instructions while recording. It is not a diagnostic electrocardiogram and cannot detect or rule out a heart attack or other condition.
Use wrist-based SpO2 and sleep outputs as general wellness trends. Fit, movement, skin contact and other conditions can affect estimates. Do not use them for diagnosis, treatment or urgent decisions.
The G BAND app provides a private calendar for recording and reviewing menstrual-cycle information. It is not intended for contraception, fertility diagnosis or medical decisions.
CardioBand is listed for about 7 to 10 days of typical use and 15 to 20 days on standby, with charging taking under 2.5 hours. Actual battery life varies with features, settings and connection use.
No. The listed 1ATM rating should not be treated as permission to swim, shower or submerge the band. Water resistance can reduce over time.
CardioBand is listed for Android 8.0 or later and iPhone with iOS 13.0 or later through the G BAND app. Compatibility can vary by phone, operating-system version and app permissions. No subscription is listed as required.
CardioBand has a 30-day return window. Eligibility, condition requirements and the return process are subject to the REXQU Returns and Refunds Policy.
Review HRV, heart-rate, activity and other compatible wellness estimates in the G BAND app without a display on your wrist. CardioBand is $139.97 with free tracked shipping and a 30-day return window subject to policy.
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