REXQU SereneIQ
$139.97
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Serenity, Engineered.
SereneIQ is an always on display smartwatch, so the time is simply there when you look. The REXQU SereneIQ pairs a classic analog look with a vivid 1.32″ always-on AMOLED display — plus heart-rate monitoring, women’s health tracking and Bluetooth calls, all at a feather-light 23.5 grams.
✓ Free shipping ✓ 30-day money-back guarantee ✓ Works with iPhone & Android
Six reasons the SereneIQ feels less like a gadget and more like a companion.
A crisp 466×466 AMOLED screen behind Gorilla Glass, with always-on display so the time is simply there — like a real watch.
A precise optical sensor tracks your pulse through the day, with clear trends in the free DaFit app.
Log and follow your monthly rhythm from your wrist, with a private calendar and gentle reminders in the app.
Answer and make calls over Bluetooth 5.3 without reaching for your phone.
Pick a sport mode and let the watch record your walks, workouts and everything between.
Zinc alloy, Gorilla Glass and IP68 water resistance — at just 23.5 grams you’ll forget it’s on.
The SereneIQ’s optical sensor keeps quiet track of your pulse from first coffee to lights out. Open the DaFit app to see clear trends across days and weeks — insight without the noise.
Beyond your heartbeat, the SereneIQ can check blood pressure conveniently from the wrist and take real-time blood oxygen readings — helping you notice changes early and adjust before they become a thing. For wellness awareness, not medical diagnosis.
Built-in women’s health monitoring lets you log and predict your monthly cycle right from your wrist, with a private calendar and discreet reminders in the app.
For wellness tracking and awareness — not a replacement for professional medical advice.
With Bluetooth 5.3 calling, the SereneIQ lets you answer while cooking, gardening or carrying groceries. Speaker and microphone are built right into that slim case.
For wellness awareness and conversations with your physician — not a replacement for a medical device.
Choose from multiple sport modes and the SereneIQ records your effort while you focus on moving. From morning walks to studio classes, it all lands in the app automatically.
Dynamic watch faces and a 3D stereoscopic menu make the SereneIQ feel alive. Keep the elegant analog dial for the office, switch to something playful for the weekend — the always-on display keeps it classy around the clock.
The 180mAh battery runs 5–7 days of regular use and up to 20 days on standby. When it finally asks for power, the magnetic charger tops it up without fuss.
| REXQU SereneIQ | Big-Brand Smartwatch | Basic Fitness Band | |
|---|---|---|---|
| Display | 1.32″ AMOLED, 466×466, always-on | ✓ | ✗ Small strip |
| Heart-Rate Monitoring | Yes — precise optical sensor | ✓ | ✓ Basic |
| Blood Pressure | Yes — on-demand readings | ✗ Rare | ✗ |
| Blood Oxygen (SpO2) | Yes — real-time | ✓ | Limited |
| Women’s Health | Yes — cycle tracking | ✓ | ✗ |
| Bluetooth Calls | Yes — BT 5.3, speaker + mic | ✓ | ✗ |
| Sport Modes | Multiple sport modes | ✓ | Limited |
| Battery | 5–7 days use, 15–20 day standby | 1–2 days | 5–7 days |
| Weight | 23.5g — Gorilla Glass front | 45–60g | 25g |
| Water Resistance | IP68 | ✓ | Splash only |
| App | DaFit (free) | ✓ | ✓ |
| Compatibility | Android 5.0+ / iOS 8.0+ | ✓ | ✓ |
| Price | $139.97 | $399+ | $99 + fees |
It looks like the analog watch my mother wore, but it catches my calls and tracks my heart. The always-on dial fools everyone.
So light I forget it’s there. The cycle calendar is discreet and the battery genuinely lasts most of a week.
I take calls from my wrist while gardening. Beautiful blue dial, and the app is simple enough for anyone.
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.
Swap dials in the CO-FIT app — delicate analog looks, bold digital layouts and colourful faces that make the AMOLED screen sparkle.
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Wear the SereneIQ 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.
An always-on screen is the feature people either love immediately or switch off within a week. Here is the honest trade.
A screen that wakes only when you flick your wrist is a small, constant reminder that you are wearing a computer. An always-on display just shows the time, the way a watch has always done — you glance and it is there, no gesture, no delay. That is the entire argument, and for a lot of people it is decisive.
Keeping pixels lit is the single largest drain on any smartwatch. On an AMOLED panel the cost depends heavily on the watch face: a mostly-black design with a few light elements costs far less than a bright, photographic one, because unlit pixels draw almost nothing. Choosing a dark face is the easiest saving available.
In always-on mode a well-designed watch drops brightness and often simplifies the face, lighting fewer pixels until you raise your wrist. That is why the feature is practical at all, and why the difference between always-on and wake-on-raise is smaller than it sounds — though it is never zero. See battery life on smaller watches.
A 1.32-inch case sits flat on a slimmer wrist, which keeps the optical heart-rate sensor in steady contact. A watch that rocks as you move loses contact and produces gaps. See smartwatches for smaller wrists. The American Heart Association target heart rate guide covers what to do with the readings.
SereneIQ records cycle dates and predicts the next from your own history. It is not contraception, a fertility test or a diagnosis — the American College of Obstetricians and Gynecologists is the reference for anything clinical. More on cycle tracking on a wearable.
More from the range: women’s smartwatches · everyday style smartwatches · choosing a smartwatch as a woman · all health smartwatches. Health statements follow our editorial and research standards.
It uses noticeably more than a wake-on-raise screen, though less than people expect. Always-on mode dims the display and simplifies the face rather than running at full brightness, and on an AMOLED panel unlit pixels draw almost nothing — so a dark watch face with a few light elements is far cheaper to keep on than a bright photographic one. If battery is your priority, switching always-on off is the single biggest gain available on any watch.
Yes. It is a setting rather than a fixed behaviour, so you can switch it off entirely, or schedule it to stay dark overnight and during set hours. Many people leave it on during the working day and off at night, which recovers most of the battery cost while keeping the part of the feature they actually use.
Yes. A precise optical heart-rate sensor monitors your pulse throughout the day, with clear trends in the free DaFit app.
Yes. You can log and follow your monthly cycle from the watch, with a private calendar and reminders in the app.
Yes. With Bluetooth 5.3, a built-in speaker and microphone, you can answer and make calls from your wrist.
5–7 days of regular use and 15–20 days of standby from a single magnetic charge.
It’s IP68 rated — fine for handwashing, rain and everyday splashes. We don’t recommend swimming or showering with it.
Yes. It pairs with the free DaFit app and works with Android 5.0+ and iOS 8.0+.
Join thousands of women who wear a watch that respects their style and watches over their health — backed by our 30-day money-back guarantee.
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