REXQU CardioCall Bluetooth Calling Smartwatch
$159.97
Buy Now →
✓ Free shipping✓ 30-day returns✓ Ships in 24–48h
Take the Reading. Take the Call.
Take the reading. Take the call. Pair CardioCall with a compatible phone to make and answer Bluetooth calls through its speaker and microphone. It also combines an ECG wellness waveform, SpO₂ and temperature trends, sleep estimates and SOS contact calling on a 1.56-inch AMOLED display.
✓ Free shipping ✓ 30-day return window ✓ Compatible with listed iPhone & Android versions
Use this smartwatch with Bluetooth calling through a paired phone, then review compatible wellness trends in the H Band app. Compare more options in the REXQU health smartwatch collection.
Record the listed on-demand single-channel waveform for personal review in the compatible app.
Use the watch speaker and microphone for calls through a compatible paired phone within Bluetooth range.
Review wrist-based blood-oxygen estimates as general wellness context, not clinical measurements.
Compare wrist-based temperature estimates over time; do not use them to diagnose illness or fever.
Review estimated sleep patterns and app-generated stress trends for general routine awareness.
A 1.56-inch 480×480 AMOLED display in a listed IP67 body that is not intended for swimming or showering.
CardioCall brings compatible heart-rate records, cuffless blood-pressure and SpO₂ estimates, wrist-temperature trends, sleep estimates and app-generated stress trends into the H Band app for general wellness awareness.
Use a validated upper-arm cuff for blood-pressure readings that matter to diagnosis or treatment.
CardioCall displays wrist-based skin-temperature estimates that you can compare over time in the app. Environmental conditions, fit, activity and skin contact can affect results, so use an appropriate clinical thermometer when accuracy matters.
Follow the app instructions, touch the watch sensor and remain still to record the listed single-channel wellness waveform. It is not a diagnostic electrocardiogram and cannot detect or rule out a heart attack or other condition. Compare models in our ECG smartwatches collection.
Wear CardioCall overnight to review estimated sleep duration and stages, alongside app-generated stress trends. Use these outputs for general routine awareness rather than a sleep, mental-health or medical diagnosis.
Bluetooth 5.3 calling connects CardioCall to a compatible phone, allowing supported contact access and call controls through the watch speaker and microphone while the phone remains within Bluetooth range.
The SOS shortcut is intended to call a saved contact through a compatible paired phone within Bluetooth range. Set up and test it in advance; it is not a monitored emergency-response service, does not guarantee a connection and does not transmit GPS location.
Between on-demand ECG recordings, CardioCall can store compatible heart-rate records, SpO₂ and temperature estimates, plus menstrual-cycle information in the H Band app. Use these as general wellness trends, not medical measurements.
| Feature | REXQU CardioCall |
|---|---|
| Bluetooth calling | Calls through a compatible paired phone within Bluetooth range |
| Speaker and microphone | Built into the watch |
| ECG | On-demand single-channel wellness waveform |
| Heart rate | Background trend records |
| Blood oxygen | Wrist-based SpO₂ wellness estimates |
| Temperature | Wrist-based skin-temperature estimates |
| Blood pressure | Cuffless general wellness estimate; not a cuff replacement |
| Sleep and stress | Estimated patterns in the H Band app |
| Cycle tracking | Private recording calendar in the app |
| Display | 1.56-inch 480×480 AMOLED |
| Water resistance | Listed IP67; not for swimming, showering or deliberate submersion |
| Compatibility | Listed for Android 5.0+ and iOS 10.0+ through H Band |
| Price | $159.97 |
Quantity:
Choose your style:
Pick a style for each watch — mix & match:
A receipt is on its way to your email. Your CardioCall ships within 24–48 hours.
CardioCall has a 30-day return window. Eligibility, product-condition requirements and the return process are subject to the REXQU Returns and Refunds Policy.
Calling from the wrist is either the feature you use daily or the one you turn off in week two. What decides it is worth understanding first.
CardioCall has its own speaker and microphone, and it routes the call through your paired phone over Bluetooth. That means it needs the phone nearby and switched on — it does not have its own SIM or mobile connection. Walk out of Bluetooth range and the call moves back to the phone. See how Bluetooth calling works.
Driving, cooking, carrying shopping, gloves on, phone in a bag at the bottom of the stairs. Those are the moments people actually use it. What it is not good for is a long or private conversation — you are on a speakerphone held near your face, and everyone nearby can hear both sides.
Expect roughly ten metres indoors, less through walls. Wind and traffic noise reach a wrist microphone more than a phone held to your ear, so outdoor calls are noticeably harder. Neither is a fault — both are physics.
The on-demand waveform is a single-lead trace between the case and a fingertip, which is one view of the heart’s electrical activity rather than the twelve-lead recording a clinician uses. Save it and show someone qualified — our ECG guide, ECG watches with calling and what a watch can say about AFib cover it properly.
Skin temperature is not core body temperature and cannot detect fever. SpO2 shifts with fit, motion, circulation and cold hands. Both are useful against your own baseline. The American Heart Association has the heart-rate ranges and the CDC activity guidelines the weekly targets.
More from the range: all health smartwatches · ECG smartwatches · calling watches for seniors · calling watches for women. Health statements follow our editorial and research standards.
Yes. CardioCall has its own speaker and microphone but no SIM or mobile radio of its own, so it routes calls through your paired phone over Bluetooth. Keep the phone within roughly ten metres — less through walls — and the watch works as a wrist speakerphone. Step out of range and the call simply continues on the phone.
Indoors and in quiet settings, generally yes. Outdoors it is harder: a wrist microphone sits further from your mouth than a phone and picks up more wind and traffic noise. It is at its best for short, practical calls when your hands are busy — and least suited to long or private conversations, since you are effectively on a speakerphone that everyone around you can hear.
Pair CardioCall with a compatible phone over Bluetooth 5.3. Within Bluetooth range, you can answer or reject calls, dial supported contacts and use the watch's built-in speaker and microphone. Calling features can vary by phone and permissions.
No. CardioCall is not a standalone cellular watch. Calling, contact access and SOS contact calling require a compatible paired phone within Bluetooth range and the necessary permissions.
The feature records an on-demand, single-channel wellness waveform when you follow the app instructions and remain still. It is not a diagnostic electrocardiogram and cannot detect or rule out a heart attack or other condition.
No. CardioCall'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 watch reading.
Use wrist-based SpO2 and skin-temperature 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.
CardioCall displays estimated sleep patterns and app-generated stress trends for general wellness awareness. These outputs are not a sleep, mental-health or medical diagnosis.
The SOS shortcut is intended to call a saved contact through a compatible paired phone within Bluetooth range. It is not a monitored emergency-response service, does not guarantee a connection and does not transmit GPS location. Set up and test it before relying on it.
No. The listed IP67 rating is intended for limited splash and dust resistance, not swimming, showering, diving or deliberate submersion. Water resistance can reduce over time.
CardioCall is listed for Android 5.0 or later and iPhone with iOS 10.0 or later through the H Band app. Compatibility can vary by phone, operating-system version and app permissions. No subscription is listed as required.
CardioCall has a listed 440mAh battery and magnetic charging. Actual battery life and charging time vary with calls, display use, enabled features, settings and connection conditions.
CardioCall has a 30-day return window. Eligibility, condition requirements and the return process are subject to the REXQU Returns and Refunds Policy.
Looking for a smartwatch with calling? CardioCall is a smartwatch for calls through a compatible paired phone, with the convenience of a smartwatch with speaker and microphone controls on the wrist. Review compatible wellness trends on the watch or in H Band. CardioCall is $159.97 with free tracked shipping and a 30-day return window subject to policy.
Get My CardioCall →