A classic chronograph silhouette hiding a 1.75-inch AMOLED and one-tap health checks — heart rate, blood pressure and blood oxygen readings on your wrist, with the full picture charted in the app.
✓ Free shipping ✓ 30-day money-back guarantee ✓ Works with iPhone & Android
Every feature below comes straight from the manufacturer panels — measured claims for a watch you wear everywhere.
A big, vivid AMOLED with an ultra-wide viewing angle — bright detail whether you glance straight on or sideways.
The optical sensor tracks your heart rate in real time, exercising or resting, and charts the changes for you.
One-click blood pressure readings on the wrist, with 24-hour intelligent monitoring and interval records in the app.
An upgraded green-light sensor measures blood oxygen saturation on demand — useful insight during long work stretches.
Rich dial styles to match your outfit, your mood or your Monday — swap them at will.
A 51mm chronograph-style case at just 12mm thin, in silicone or stainless steel bracelet finishes.
The 1.75-inch AMOLED turns every glance into a full readout — vivid color, deep blacks and an ultra-wide viewing angle that stays readable from any tilt of the wrist.
The optical heart-rate sensor works in real time whether you are exercising or resting, monitoring changes so you can see your heart health status at any time.
For wellness tracking and awareness — not a replacement for professional medical advice.
Raise your wrist and take a one-click blood pressure reading. The 24-hour intelligent monitoring and app interval records turn single numbers into trends you can act on.
For wellness awareness and conversations with your physician — not a replacement for a medical device.
An upgraded green-light sensor measures true blood oxygen saturation the moment you ask — a useful check during long mental work, hard training or high-effort days.
A 51mm chronograph-style case, 12mm thin, with real pushers and a skeleton dial attitude — in black or gray silicone, or full stainless steel bracelets that pass at any dinner table.
Steps, calories and health readings roll into one summary you can flick through in seconds — and the companion app keeps the long-term record.
| REXQU Spectrum | Big-Brand Smartwatch | Basic Fitness Band | |
|---|---|---|---|
| 1.75″ AMOLED display | ✓ Ultra-wide angle | ✓ | ✗ Small LCD |
| Chronograph styling + steel option | ✓ Included | Extra-cost bands | ✗ |
| Heart-rate monitoring | ✓ Real-time optical | ✓ | ✓ Basic |
| Blood pressure awareness | ✓ One-click + 24h | ✗ Not offered | ✗ |
| Blood oxygen (SpO₂) | ✓ Green-light sensor | ✓ | Some models |
| App trends & interval records | ✓ Included | ✓ | Subscription |
| Watch faces | Hundreds | ✓ | ~10 |
| Case thinness | 12mm | 13–15mm | — |
| Subscription required | ✗ Never | For insights | For most insights |
| Price | $129.97 | $399+ | $99 + fees |
“My doctor asked where the numbers came from. The wrist readings match the cuff closely enough to spot my bad weeks.”
“It passes as a dress watch at meetings, then checks my blood pressure at lunch. Nobody suspects a thing.”
“The steel bracelet sold me, the oxygen readings kept me. I check after every long shift.”
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.
Black or Gray silicone for weekdays in motion — Silver Steel or Black Steel when the calendar says dress up.
Rich styles and rich dials to match diverse aesthetics — swap at will to show your own personality, from skeleton chronographs to clean data screens.
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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 Spectrum ships within 24–48 hours.
Wear the Spectrum for a full month — to the office, the gym and everywhere between. If the daily readings haven’t earned their place on your wrist, send it back for a complete refund.
Yes — the Spectrum pairs with Android phones and iPhones over Bluetooth through its free companion app, where your readings and trends are stored.
No. Heart rate, blood pressure, blood oxygen, every watch face and all app trends are included permanently.
Raise your wrist and take a one-click reading, or let 24-hour intelligent monitoring log intervals automatically. Readings are wellness guidance — keep using any device your doctor prescribed.
Black and Gray come on soft silicone for active days; Silver Steel and Black Steel wear like a classic bracelet watch. The 51mm case is 12mm thin, so it slips under a cuff.
Yes — hundreds of dial styles are included, from skeleton chronographs to clean digital layouts, switchable right on the watch.
You have a 30-day money-back guarantee with free tracked shipping on the original order. Wear it for a month and decide.
Join thousands who check in with their heart, pressure and oxygen every day — without wearing a gadget that looks like one. Today: $129.97 instead of $259.97, with free shipping and a 30-day guarantee.
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