The REXQU CardioBand is a screenless band built around your heart — 24/7 heart rate, HRV, blood pressure and blood oxygen, quietly recorded and clearly explained in the G BAND app. 7–10 days per charge.
✓ Free shipping ✓ 30-day money-back guarantee ✓ Works with iPhone & Android
Six reasons the CardioBand is the easiest way to actually know your heart.
Continuous heart-rate monitoring day and night, with clear trends in the free G BAND app.
Round-the-clock heart-rate variability — a real window into stress, recovery and balance.
Blood pressure monitored continuously and logged automatically to your phone.
SpO₂ tracked around the clock, so dips don’t go unnoticed.
Menstrual cycle tracking with a private calendar in the app.
A 220mAh cell runs 7–10 days of normal use from one quick magnetic charge.

The CardioBand tracks your heart rate 24 hours a day — rest, effort and everything between — and turns it into clean, readable trends in the G BAND app.

This is the CardioBand's party trick: touch the sensor, hold still, and it records a full ECG trace — then hands the waveform and an easy-to-read analysis to the G BAND app. No screen on your wrist, no fuss, just the reading that matters most to a heart-first tracker. Wellness insight, not a medical device.

So light you'll forget it's on, the CardioBand works the night shift: AI sleep analysis breaks your night into stages, spots patterns across the week, and folds it into one health picture in G BAND — mornings start with answers, not guesses.
Heart-rate variability is monitored around the clock — a genuine picture of how stressed or recovered your body is, without wearing a chest strap to bed.
For wellness tracking and awareness — not a replacement for professional medical advice.


Blood pressure and blood oxygen are monitored 24/7 and logged automatically — the daily numbers that matter, without the daily ritual.
For wellness awareness and conversations with your physician — not a replacement for a medical device.
Built-in menstrual cycle tracking keeps a private calendar in the G BAND app, alongside your heart and wellness data.


Steps, calories and multiple sport modes record your activity, and accurate step counting keeps every walk and run counted — all from a band with no screen to babysit.

The 220mAh battery runs 7–10 days of normal use and 15–20 days on standby. The magnetic charger refills it in under 2.5 hours.
| REXQU CardioBand | Big-Brand Smartwatch | Basic Fitness Band | |
|---|---|---|---|
| Design | Screenless — zero distractions | ✗ Screen-based | ✗ Screen-based |
| Heart Rate | 24/7 monitoring | ✓ | ✓ Basic |
| ECG recording | ✓ On-demand + analysis | Top models only | ✗ |
| AI sleep analysis | ✓ Stages + weekly patterns | ✓ | ✓ Basic |
| HRV | 24/7 monitoring | ✓ | ✗ |
| Blood Pressure | 24/7 monitoring | ✗ Rare | ✗ |
| Blood Oxygen | 24/7 monitoring | ✓ | Some models |
| Cycle Tracking | Yes — private calendar | ✓ | Limited |
| Activity | Steps, calories + sport modes | ✓ | ✓ Basic |
| Battery | 7–10 days use, 15–20 standby | 1–2 days | 5–7 days |
| Water Resistance | 1ATM | ✓ | Splash only |
| App | G BAND (free) — Android 8+/iOS 13+ | ✓ | ✓ |
| Price | $139.97 | $399+ | $99 + fees |
My cardiologist asked where the week of heart-rate data came from. A band I forget I’m wearing — that’s where.
The HRV trends taught me more about my stress than a year of guessing. And I only charge it on Sundays.
No screen means I actually wear it 24/7, which means the data is actually complete. Simple and brilliant.
Every order is covered by our 30-day money-back guarantee — with free tracked shipping and easy returns. Love it, or send it back. No questions, no fuss.

Just a slim, screen-free band that keeps a complete record of your heart — and stays out of your way.
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1000W GaN technology · 10 ports · charge laptops, phones, tablets and more simultaneously. Ships with your order.
One click — your saved card is charged instantly. This offer is only available right now.
One click — your saved card is charged instantly. This offer disappears when you leave.
A receipt is on its way to your email. Your CardioBand ships within 24–48 hours.
Wear the CardioBand for a full month — workouts, workdays, sleep and all. If it hasn’t made the healthy habits easier, send it back for a complete refund. No restocking fee, no questions.
Everything syncs to the free G BAND app over Bluetooth — heart rate, HRV, blood pressure, blood oxygen, activity and cycle tracking in clear dashboards.
It monitors heart rate, HRV, blood pressure and blood oxygen 24/7 — not just when you ask — so your trends are complete. It’s for wellness awareness and conversations with your physician, not a replacement for a medical device.
Yes. Menstrual cycle tracking keeps a private calendar in the G BAND app.
7–10 days of normal use and 15–20 days on standby. The magnetic charger refills it in under 2.5 hours.
It’s rated 1ATM — fine for handwashing, rain and sweaty workouts. We don’t recommend swimming or showering with it.
Yes. It pairs over Bluetooth with the free G BAND app and works with Android 8.0+ and iOS 13.0+.
Join thousands keeping a complete, quiet record of their heart with the CardioBand — backed by our 30-day money-back guarantee.
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