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REXQU HEALTH WATCHES Get Equilibrium
REXQU Equilibrium Health Watch
REXQU Equilibrium Health Watch
$129.97
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Slim and Lightweight Smartwatch

Equilibrium Slim Smart Watch With Curved AMOLED

Barely There. Fully Aware.

Equilibrium is a slim smart watch for people who find most of them too thick to live with. At a listed 7.5mm and 45 grams, Equilibrium combines a slim metal body with a curved 1.96-inch AMOLED, Bluetooth calling and heart-rate, SpO₂, sleep, activity and cuffless blood-pressure trend features.

$129.97

✓ Free shipping   ✓ 30-day money-back guarantee   ✓ Works with compatible iPhone & Android phones

REXQU Equilibrium slim smart watch with a 7.5mm metal body and curved 1.96-inch AMOLED
Free shipping 30-day returns Ships in 24–48 hours No subscription required

Slim Smart Watch Features Worth the Thinner Case

A lightweight smartwatch designed for day and night wear, with a curved display, Bluetooth calls and everyday fitness and wellness trends.

✨

Curved 1.96″ AMOLED

A 368×448 high-resolution curved display with 2.5D glass and an ultra-wide viewing angle — fluid, bright and pleasing to touch.

🛡️

7.5mm — An Ultra Thin Smartwatch Body

A listed 7.5mm profile and 45g weight make Equilibrium comfortable for everyday and overnight wear.

❤️

Heart Rate and SpO₂ Trends

Review continuous heart-rate patterns and on-demand SpO₂ estimates for general wellness awareness.

😴

Estimated Sleep Staging

Compare estimated sleep duration and deep, light and REM stage patterns in the companion app.

📞

Bluetooth Calling

Answer and make calls from the watch itself — speaker and microphone are built into the slim metal case.

🩺

Ultra-Slim Metal Body

Just 7.5mm thin and 45 grams with a rotating crown — a watch you forget you are wearing.

REXQU Equilibrium ultra slim 7.5mm profile

A 7.5mm, 45g Lightweight Smartwatch

The rounded metal body is listed at 7.5mm and 45 grams, giving Equilibrium a low-profile fit for work, activity and overnight sleep tracking. Explore more styles in the REXQU collection of women's smartwatches.

  • 7.5mm ultra-slim profile
  • 45g lightweight metal design
  • Rotating crown for fluid control
Feel the Difference →
Movement Modes

Fitness Tracking in a 7.5mm Smartwatch

Select from multiple movement modes, including running, cycling and rope skipping, and review supported workout and heart-rate data in the companion app.

  • Multiple movement modes built in
  • Live heart rate through every session
  • History charted automatically
Start Moving →
REXQU Equilibrium ultra-slim smartwatch with movement modes and heart rate tracking
Woman checking heart rate on the REXQU Equilibrium
Heart & Oxygen

Heart-Rate and Blood-Oxygen Trends

Review continuous heart-rate patterns and take on-demand SpO₂ estimates from a slim health smartwatch designed for general wellness and fitness awareness.

  • 24/7 continuous heart-rate tracking
  • On-demand SpO₂ blood-oxygen estimates
  • All-day activity tracking
Track My Health →

For wellness awareness and conversations with your physician — not a replacement for a medical device.

REXQU Equilibrium cuff-free blood pressure monitoring on a 1.96 inch AMOLED
BLOOD PRESSURE

Cuffless Blood-Pressure Estimates from the Wrist

Take an on-demand cuffless estimate and compare personal trends in the app. Equilibrium is also included in the REXQU range of blood pressure smartwatches.

  • On-demand cuffless blood-pressure estimates
  • Day-by-day trends in the app
  • All on a watch that's 7.5mm thin
Know My Numbers →

Use a validated upper-arm cuff when an accurate blood-pressure reading matters.

Compare Estimated Sleep-Stage Trends

Wear Equilibrium overnight to estimate sleep duration and deep, light and REM stage patterns, then compare nights in the companion app.

  • Deep, light and REM phase staging
  • Night-to-night pattern comparisons
  • Morning reports in the companion app
Sleep Smarter →
Woman sleeping while the REXQU Equilibrium tracks sleep stages
Man taking a Bluetooth call on the REXQU Equilibrium
Bluetooth Calls

Bluetooth Calling from a Paired Phone

When a compatible phone is connected and within Bluetooth range, the built-in speaker and microphone let you answer and control calls from the watch.

  • Answer and dial from the watch
  • Built-in speaker and microphone
  • Call and message notifications
Take the Call →
REXQU Equilibrium curved 1.96 inch AMOLED display

Curved 1.96-Inch AMOLED Smartwatch Display

The curved 1.96-inch AMOLED at 368×448 meets 2.5D glass for an interface that feels fluid under your finger — with an ultra-wide viewing angle from any tilt.

  • 1.96″ AMOLED at 368×448
  • 2.5D curved-glass interface
  • Ultra-wide viewing angle
See It Flow →

Equilibrium Slim Smartwatch Comparison

REXQU EquilibriumBig-Brand SmartwatchBasic Fitness Band
Curved 1.96″ AMOLED (368×448)✓ 2.5D glass✓✗ Small LCD
Case thinness / weight7.5mm · 45g11–14mm—
Estimated sleep monitoring✓ IncludedVariesVaries
24/7 heart rate✓ Continuous✓✓ Basic
Sleep staging (deep/light/REM)✓ Included✓✓ Basic
Bluetooth calls (speaker + mic)✓ Included✓✗
Rotating crown control✓ Included✓✗
Metal case✓ IncludedExtra-cost models✗
Subscription requiredNo monthly feeVariesVaries
Blood pressure✓ Cuff-free readingsSome models✗
Blood oxygen (SpO₂)✓ On demandSome models✗
AI voice assistant✓ IncludedSome models✗
Price$129.97VariesVaries

Forgotten by Noon. Checked by Night.

★★★★★

Verified REXQU Equilibrium customer
★★★★★

“I stopped noticing it by lunchtime the first day. The sleep report I showed my doctor — that, he noticed.”

Verified Customer  ✓ Customer review
Verified REXQU Equilibrium customer
★★★★★

“The sleep breakdown finally explained my 3pm crashes. Light sleep all night. Fixed my caffeine, fixed my nights.”

Verified Customer  ✓ Customer review
Verified REXQU Equilibrium customer
★★★★★

“So thin it fits under my dress shirt cuff. Takes calls while I cook. My old watch felt like a brick after this.”

Verified Customer  ✓ Customer review

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.

Six Finishes. One Featherweight.

Silicone in Black, Gray or Brown, a two-tone Black Gold, or steel bracelets in Black and Silver — same slim engine in all six.

REXQU Equilibrium customizable watch faces
Watch Faces

Dials for Every Kind of Day

Customizable watch faces from elegant chronographs to playful digital layouts — switch styles right on the curved screen.

  • Customizable face library
  • Elegant, digital and data-rich styles
  • Swap them right on the watch
Get My Equilibrium →
Happy REXQU Equilibrium owner on her balcony

REXQU Equilibrium Health Watch

$129.97

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MONEY-BACK

Four Weeks to Be Sure

Wear the Equilibrium day and night for a full month — meetings, workouts, sleep. If it hasn’t earned its 45 grams, send it back for a complete refund. No restocking fee, no fuss.

What You Gain and Lose With a Slim Smart Watch

Thinness is a real engineering trade rather than a styling choice. Here is what moves in each direction.

A thinner case is more comfortable, and that changes the data

At a listed 7.5mm and 45 grams, Equilibrium slides under a shirt cuff and is comfortable enough to sleep in. That matters more than it sounds: resting heart rate and sleep are collected overnight, so a watch you keep on gives you a fuller record than a thicker one you take off at bedtime.

The honest trade is battery capacity

Thin cases hold smaller cells. There is no way around the physics, so a slim watch will generally need charging more often than a chunky outdoor one. If weeks between charges is your priority, a thicker model is the right answer — see what actually drains a watch.

A curved display is easier to read on the wrist

A 1.96-inch panel curved to follow your wrist keeps more of the screen facing you at a glance, and the edges catch less glare than a flat panel of the same size. It is also why the watch looks smaller than its screen size suggests.

Fit still decides sensor accuracy

A slim case sits flat, which helps, but the strap does the real work. Snug, a finger width above the wrist bone, dry skin. The American Heart Association target heart rate guide covers what to do with the numbers once they are reliable.

Read the wellness figures as trends

SpO2 is an optical estimate that moves with fit, motion and circulation, and sleep stages are inferred from movement and heart rate rather than measured. Both are useful against your own baseline. The National Heart, Lung, and Blood Institute covers why total sleep matters more than the stage breakdown. See also watches for smaller wrists.

More from the range: all health smartwatches · everyday style smartwatches · choosing an everyday watch · fitness bands and trackers. Health statements follow our editorial and research standards.

Equilibrium Smartwatch Frequently Asked Questions

Does a slim smart watch have worse battery life?

Usually, yes, and it is worth being upfront about. A thinner case physically holds a smaller battery, so a slim watch tends to need charging more often than a bulky outdoor model. What you get back is a watch comfortable enough to wear overnight and under a shirt cuff — which is how you collect resting heart rate and sleep data in the first place. Pick the trade that matches how you will actually wear it.

How thin is thin for a smartwatch?

Anything under about 10mm reads as slim on a wrist, and under 8mm is genuinely thin — Equilibrium is listed at 7.5mm. The number that matters almost as much is weight: at 45 grams a watch is light enough that most people stop noticing it, which is the real test. A thin but heavy watch still feels present all day.

Which phones work with the Equilibrium smartwatch?

Equilibrium pairs with compatible Android phones and iPhones through Bluetooth and uses a free companion app for supported trends and settings.

Does Equilibrium require a subscription?

No. The companion app and the watch's listed calling, activity and wellness-tracking features do not require a monthly subscription.

How thin and light is the Equilibrium smartwatch?

The Equilibrium metal watch body is listed at 7.5mm thick and 45 grams, making it a slim, lightweight option for day and night wear.

How large is the Equilibrium AMOLED display?

Equilibrium has a curved 1.96-inch AMOLED display with 2.5D glass and a listed 368 by 448 resolution.

Does Equilibrium track heart rate and blood oxygen?

Yes. It provides continuous heart-rate trends and on-demand SpO₂ estimates for general wellness and fitness awareness.

Can Equilibrium replace a blood-pressure cuff?

No. Equilibrium provides cuffless blood-pressure estimates for personal wellness trend tracking. Use a validated upper-arm cuff when an accurate reading matters.

Does Equilibrium track sleep automatically?

Yes. When worn overnight, Equilibrium estimates sleep duration and stage patterns for comparison in the companion app.

Can Equilibrium make calls without a phone nearby?

No. Calling uses Bluetooth, so a compatible paired phone must remain within range. The watch's built-in speaker and microphone handle the conversation.

What activity features does Equilibrium include?

Equilibrium includes multiple movement modes and records supported workout, heart-rate and everyday activity data in the companion app.

Which Equilibrium finishes are available?

The page lists Black, Gray and Brown silicone options, Black Gold, and Black and Silver steel-bracelet styles. The core watch features are the same across all six.

What is the Equilibrium return window?

Equilibrium orders are covered by a 30-day return window. Review the REXQU returns policy for the current terms and instructions.

Choose the Equilibrium Slim AMOLED Smartwatch

Get a slim 7.5mm, 45g metal smartwatch with a curved AMOLED display, Bluetooth calling and everyday fitness and wellness trends. Today: $129.97.

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$129.97
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