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HealthLink is a heart rate monitor smartwatch designed to help you follow wrist-based heart-rate trends throughout the day when monitoring is enabled. It also brings together on-demand ECG, SpO₂, skin-temperature and sleep trends, breathing-related wellness features and a bright 1.95-inch AMOLED display in one everyday watch.
✓ Free shipping ✓ 30-day return window ✓ iPhone & Android support*
HealthLink combines wrist-based heart-rate monitoring with ECG, SpO₂, skin-temperature, sleep and other wellness features without positioning wearable readings as medical measurements.
Follow wrist-based heart-rate patterns through the day when background tracking is enabled, with app-based trends for personal wellness awareness.
Capture a consumer wrist ECG and save the waveform for personal reference or discussion with a healthcare professional.
Take wrist-based SpO₂ spot checks and compare your own trends over time. Readings can vary with fit, movement and other conditions.
A wrist temperature sensor helps you compare changes against your personal baseline. It is not a clinical thermometer and should not be used to diagnose fever.
Review estimated sleep stages and overnight wellness trends in the companion app for personal awareness.
Use supported voice-assistant functions through a compatible paired phone and Bluetooth connection.

Heart rate, sleep, oxygen and skin-temperature readings become more useful when you compare your own pattern over time. HealthLink brings those supported wellness trends together in one app so you can notice changes without treating a single wrist reading as a diagnosis.

HealthLink includes a breathing-related wellness feature that can log supported readings in the app, helping you compare your own pattern over time rather than relying on a one-off number.
For wellness tracking and awareness — not a replacement for professional medical advice.


Start a consumer wrist ECG when you want to capture a rhythm snapshot. The waveform can be saved in the companion app for your own reference or discussed with a healthcare professional.
HealthLink is not a clinical 12-lead ECG and does not diagnose arrhythmia or other heart conditions.
Wear HealthLink overnight to review estimated sleep stages and overnight heart-rate trends, then compare one night with your own longer-term pattern in the companion app.


HealthLink lets you follow wrist skin-temperature changes against your own baseline and view SpO₂ spot checks alongside heart and sleep trends. Skin temperature is not the same as core body temperature, so use it for personal trend awareness rather than fever detection.

The bright 1.95-inch AMOLED makes supported wellness readings easy to see at a glance, while the larger display can be useful for anyone who prefers bigger on-wrist numbers and controls.
| Feature | REXQU HealthLink | What to Know |
|---|---|---|
| Skin-temperature sensor | ✓ Included | Tracks wrist temperature trends; not a clinical thermometer |
| Blood oxygen (SpO₂) | ✓ Spot checks | Wrist readings can vary with fit, motion and other conditions |
| Wrist ECG | ✓ On demand | Consumer wellness ECG, not a clinical 12-lead ECG |
| Heart-rate trends | ✓ Included | Background tracking depends on settings |
| Sleep trends | ✓ Estimated stages | For personal wellness awareness, not sleep-disorder diagnosis |
| Breathing-related wellness feature | ✓ Included | Not intended to diagnose respiratory conditions |
| Display | ✓ 1.95″ AMOLED | Large, bright on-wrist display |
| Voice-assistant support | ✓ Supported | Requires compatible paired phone/app connection |
| Water resistance | ✓ IP68 rated | Follow current care instructions for water exposure |
| Battery | Published up to 4 days | Actual runtime varies with display, sensors and usage |
| REXQU subscription | No required monthly REXQU subscription | Companion-app requirements can change |
The most useful approach is to compare your own temperature and other wellness trends over time instead of treating one wrist reading as a medical result.
Review heart-rate, temperature and other supported wellness trends together to see how your own baseline changes over time.
Use the large AMOLED display for a quick look at supported wellness readings without turning every number into a diagnosis.
Capture a consumer wrist ECG for personal reference and keep the saved waveform available if you want to discuss it with a healthcare professional.

From clean analogue dials to bold health dashboards, the app’s face library restyles your HealthLink in seconds — and a photo of your own makes it truly yours.
HealthLink targets shoppers looking for a heart rate monitor smartwatch, while its ECG, SpO₂ and temperature features connect naturally to our specialist health guides.
Understand the limits of consumer wrist ECG in our ECG smartwatch guide.
See factors that can affect wrist oxygen readings in our SpO₂ accuracy Health Guide.
Compare HealthLink with the broader REXQU health smartwatch range and Health Guides Editorial Standards.
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A receipt is on its way to your email. Your HealthLink ships within 24–48 hours.
Try HealthLink during the return window. If it is not the right fit, request a return within 30 days in accordance with our Returns & Refund Policy.
Continuous heart-rate data is the most useful thing a watch collects, and the easiest to misread. Here is how to use it.
Normal ranges vary enormously between people, so comparing your figure against a population average tells you very little. What matters is your own number drifting over weeks. The American Heart Association target heart rate guide sets out the zones for training; your baseline is what tells you about recovery, illness coming on, or a hard training block catching up with you.
Resting heart rate is measured while you sleep. A watch that comes off at bedtime cannot collect it, so weight, strap comfort and battery life are all part of the accuracy story rather than separate features.
Snug, a finger width above the wrist bone, dry skin. A loose watch loses sensor contact as you move and produces gaps and spikes. Tighten one notch before a workout and wear it slightly higher up the arm.
Heart rate tells you how fast; the on-demand wrist ECG records the electrical pattern of a short window so you can save it and show someone. It is single-lead, not a clinical twelve-lead, and it does not diagnose. See our ECG guide and what a watch can and cannot say about AFib.
The sensor reads the skin at your wrist, which moves with room temperature, blankets and circulation. It is a trend signal against your own normal — it cannot detect fever, and it should not be used to try. The CDC activity guidelines are the daily target worth watching instead. More in daily health monitoring.
More from the range: all health smartwatches · ECG smartwatches · blood pressure smartwatches · automatic health monitoring. Health statements follow our editorial and research standards.
At rest and at steady effort, very close — close enough that the difference rarely matters for tracking fitness or recovery. A chest strap reads the heart’s electrical signal directly, so it remains more responsive during hard intervals where the wrist sensor lags a sudden change. For everything most people use heart rate for, including resting rate and sleep, the wrist is the better tool because it is the one you will actually keep wearing.
Yes, if you want resting heart rate, sleep stages or overnight trends — all of them are collected while you are still. That makes comfort and battery life part of the measurement rather than separate conveniences. HealthLink is designed to run for days rather than needing a nightly charge, so the watch can stay on when the useful data is being collected.
HealthLink can track wrist-based heart-rate trends through the day when background monitoring is enabled. The readings are intended for personal wellness awareness and are not a substitute for clinical heart monitoring.
HealthLink uses a wrist skin-temperature sensor to show temperature-related trends. Skin temperature is different from core body temperature, so the watch should not be used as a clinical thermometer or to diagnose fever.
Its main value is comparing your own wrist-temperature pattern over time and viewing it alongside sleep, heart-rate and other supported wellness trends. A wearable temperature sensor is best treated as a baseline and trend tool.
No. HealthLink is a general wellness device. Temperature and other wrist readings should not be used to diagnose illness or decide whether medical care is necessary.
No. HealthLink can record a consumer wrist ECG for personal awareness, but it is not a clinical 12-lead ECG and does not diagnose arrhythmia or other heart conditions.
Wrist SpO₂ readings can vary with fit, movement, circulation, temperature, skin characteristics and other conditions. Use the feature to follow personal trends rather than replace a medical pulse oximeter.
HealthLink is designed to work with iPhone and Android through Bluetooth and its companion app. Compatibility can vary with phone, operating-system and app updates.
There is no required monthly REXQU subscription for the advertised watch features. Companion-app requirements can change over time.
HealthLink is listed as IP68 rated. Treat that as everyday water resistance and follow the current care instructions rather than assuming every type of swimming, showering or hot-water exposure is covered.
The page lists up to four days of normal use. Actual battery life varies with display brightness, sensors, background tracking, notifications and other features.
REXQU offers a 30-day return window subject to the Returns & Refund Policy.
Choose HealthLink for wrist-based heart-rate monitoring alongside ECG, SpO₂, skin-temperature and sleep trends on a large 1.95-inch AMOLED. Today: $139.97 with free shipping and a 30-day return window.
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