Omega Women’s 123.10.27.20.51.001 Constellation Co-Axial Automatic 27mm Swiss Automatic Silver-Tone Watch review: precise timekeeping in a luxury watch

A Compact Swiss Automatic Watch That Blends Elegance and Everyday Durability

If you’ve been looking for a refined, compact timepiece that pairs genuine luxury touches with real-world practicality, this 28 mm stainless steel Swiss automatic watch is an appealing option. It features a modified sunray dial, diamond hour markers for a subtle shimmer, and a Roman numeral-etched bezel that adds a classic frame. With an anti-reflective sapphire crystal, a stainless steel bracelet with a push-button deployant clasp, and 100 m (330 ft) water resistance, it’s designed to be worn—not babied.

Quick verdict: A well-rounded Swiss automatic watch with a small case size, scratch-resistant sapphire, and swim-ready water resistance—great for smaller wrists or anyone who prefers a discreet, dressy daily wearer with premium touches.

Whether you’re upgrading from a quartz watch or consolidating your collection around versatile pieces, this model aims to cover work, weekend, and special occasions without fuss. The diamond hour markers elevate the look without being loud, while the 100 m rating means you can keep it on for laps in the pool or a beach day. For many, it will slot in neatly as an everyday Swiss automatic watch that feels special but remains practical.

What’s in the Box

• Timepiece: 28 mm stainless steel watch with modified sunray dial and diamond hour markers
• Bracelet: Stainless steel bracelet with push-button deployant clasp
• Documentation: Not specified
• Presentation box: Not specified
• Warranty: Not specified
• Extra links/sizing tools: Not specified

Design & Build

At 28 mm, this stainless steel case falls on the compact end of the spectrum, which typically suits smaller wrists or anyone who prefers a refined, understated profile. That size makes it easy to slide under a shirt cuff and comfortable for all-day wear. The proportions naturally skew dressy, but the full stainless steel construction and 100 m water resistance allow it to handle daily life without undue worry.

The dial is a modified sunray pattern, which gives it depth and a soft play of light as your wrist moves. Diamond hour markers are applied at select positions, adding sparkle that reads as tasteful rather than flashy. The bezel is etched with Roman numerals, a subtle detail you’ll appreciate up close—more of a design flourish than a functional timing bezel, but one that telegraphs a classical aesthetic.

Up top, the anti-reflective sapphire crystal is a major quality-of-life upgrade. Sapphire is highly scratch-resistant compared with mineral glass or acrylic, and anti-reflective treatment helps reduce glare across lighting conditions. It’s a fitting match for a Swiss automatic watch you’d expect to wear for many years.

The bracelet uses stainless steel links with a push-button deployant clasp. Push-button mechanisms are easier and faster to use than friction clasps and offer a more secure closure. This setup makes for a confident on/off experience and keeps the watch planted on the wrist. If you type a lot or rest your wrist on a desk, a rounded, properly fitted deployant also helps minimize hotspots on the underside of your wrist.

Key Features

Modified Sunray Dial with Diamond Hour Markers

Benefit: Visual depth and a restrained touch of luxury
Real life: The sunray finish catches ambient light in an elegant, shifting way that’s noticeable to you without shouting across a room. Diamond hour markers add small points of brilliance, making the watch feel special at a glance—ideal for office wear and evenings out.

The combination of a sunray dial and diamond markers gives you a versatile look that pairs as easily with a blouse or button-down as it does with a cocktail dress. On busy days, you’ll appreciate how the markers help you orient time quickly, especially under bright light.

Roman Numeral-Etched Bezel

Benefit: Classic styling cue that frames the dial
Real life: Instead of printed Roman numerals on the dial, the bezel carries the classical motif. Up close, the numerals add texture and heritage vibes without cluttering the dial. It’s a small design choice that makes the piece feel more refined and differentiated from minimalist or plain-bezel watches.

If you gravitate toward timeless design but don’t want an overly ornate face, this is a tasteful middle ground that elevates the look without affecting legibility.

Anti-Reflective Sapphire Crystal

Benefit: Excellent scratch resistance and reduced glare
Real life: Sapphire is one of the hardest materials used in watchmaking, so it stays clear even if you brush against door frames, laptop lids, or carry-on luggage. Anti-reflective treatment cuts glare from overhead lights or sunlight, making the dial easier to read at a glance. For daily wear, this is a meaningful upgrade that helps the watch look newer, longer.

28 mm Stainless Steel Case

Benefit: Compact proportions, easy to wear, durable material
Real life: A 28 mm case wears lightly and suits smaller wrists or those who prefer a discreet profile. Stainless steel offers good impact resistance and is easy to clean. The smaller diameter also helps the watch transition effortlessly from business attire to weekend casual.

The size is a smart choice if larger cases feel cumbersome, and it minimizes the likelihood of banging the watch against surfaces in tight spaces.

Swiss Automatic Movement

Benefit: Battery-free convenience and mechanical craftsmanship
Real life: A Swiss automatic watch winds as you move. Wear it regularly and you’ll rarely need to hand-wind it. If you rotate among several watches, a few turns of the crown will get it started after sitting idle. Many enthusiasts prefer the tactile, living nature of mechanical timekeeping—there’s a quiet satisfaction in owning a timepiece that doesn’t depend on batteries.

Accuracy and power reserve specifics are not listed; performance can vary among automatic movements. As a rule of thumb, wearing it daily keeps it powered. If you won’t wear it for a few days, you can store it safely and expect to reset the time when you pick it up again.

Stainless Steel Bracelet with Push-Button Deployant Clasp

Benefit: Secure closure and easy on/off convenience
Real life: Push-button deployants are intuitive and confidence-inspiring—press to release, fold to close. The bracelet’s metal links balance elegance and durability, and a properly sized bracelet keeps the head of the watch centered on your wrist. If you spend long hours at a keyboard, smooth clasp contours can reduce pressure points.

Pro tip: Have the bracelet sized so you can just slip a pinky finger under the band at the 12 o’clock side. That’s a good general indicator of a comfortable fit—not too tight, not too loose.

100 m (330 ft) Water Resistance

Benefit: Ready for swimming and snorkeling (per listing), not scuba diving
Real life: You can keep it on during pool sessions or a beach vacation without swapping to a beater watch. The listing states 100 m water resistance, which in practical terms means daily water exposure is fair game. As always, ensure the crown is fully pushed in before water exposure. Rinse with fresh water after salt or chlorinated water to keep the bracelet and case looking their best.

Performance & Use

A well-balanced daily wearer should be easy to live with. This piece aims for that sweet spot: refined enough for formal settings, resilient enough for everyday life.

• Daily Accuracy and Wear: Specific accuracy figures are not provided in the listing. Automatic movements typically perform best when worn consistently. If you wear the watch daily, the movement will wind itself and maintain time without intervention. If you rotate it with other pieces, expect to wind and set it when picking it up after a few idle days.
• Initial Setup: Out of the box, the watch may need a few turns of the crown to get started (the listing doesn’t specify the winding mechanism, but most automatics can be hand-wound). Set the time carefully, avoiding forcing the hands backward if you feel resistance.
• Bracelet Sizing: Have the bracelet sized to your wrist by removing or adding links. Many jewelers will perform this quickly. Proper sizing prevents the watch from sliding or rotating excessively, which also minimizes desk rash (scuffs on the clasp and bracelet from typing).
• Water Use: The listing states it is water resistant to 100 m (330 ft), generally suitable for swimming and snorkeling, but not scuba diving. Before water exposure, ensure all crowns/pushers are fully secured (this listing notes a push-button clasp but does not specify crown type). After ocean or pool use, rinse with fresh water and pat dry to maintain the steel’s luster.
• Care and Cleaning: Wipe down the case and bracelet with a soft microfiber cloth to remove skin oils and dust. For occasional deeper cleaning, use lukewarm water and a drop of mild dish soap with a soft brush, then rinse and dry thoroughly. Avoid harsh chemicals or abrasive pads.
• Magnetism and Shocks: As with any mechanical watch, avoid strong magnetic fields (e.g., speakers, some bags with magnetic clasps) and hard knocks. If you notice the watch running unusually fast or slow after exposure, a watchmaker can demagnetize it quickly.
• Service Intervals: The listing does not specify service timing. As general guidance for mechanical watches, periodic maintenance helps ensure long-term performance. Frequency varies by movement and use; a trusted watchmaker can advise based on how the watch is running.
• Style Versatility: The compact stainless steel case and diamond markers make this an easy match for workwear and evening outfits. If you occasionally want a softer look, you could swap to a leather strap (lug width not listed) to change the vibe—though confirm compatibility and fit with a watch professional.

Where to buy

Omega Women's 123.10.27.20.51.001 Constellation Co-Axial Automatic 27mm Swiss Automatic Silver-Tone...

$4,400.00

View Deal

OMEGA Constellation Brush Co-Axial woman 123.10.27.20.51.001

$4,800.00

View Deal

Pros and Cons

Who Should Buy This

• You want a compact, refined daily watch: The 28 mm profile is comfortable for smaller wrists or for anyone who prefers a discreet, dressy presence.
• You value durability alongside elegance: Anti-reflective sapphire and stainless steel construction mean fewer worries about scratches.
• You prefer mechanical over battery-powered: As a Swiss automatic watch, it winds with your motion and delivers the tactile appeal of mechanical timekeeping.
• You need real-world water resistance: The listing’s 100 m rating makes it viable for swimming or snorkeling without swapping to a sport watch.
• You appreciate subtle luxury: Diamond hour markers and a Roman numeral-etched bezel add polish without tipping into flashy.

Who Shouldn’t Buy This

• You prefer larger or statement pieces: If you like 36–41 mm watches, 28 mm could feel too small.
• You require detailed movement specs: If you want published accuracy, power reserve, or caliber info, the listing doesn’t provide them.
• You need a dive watch: While 100 m is solid, it’s not intended for scuba per the listing, and there’s no mention of a screw-down crown or dive timing features.
• You want comprehensive pack-ins: With accessories and warranty not specified, you may prefer a package that lists everything explicitly.

Specs

Only verifiable details from the listing are included below.

Final Take

This compact Swiss automatic watch stands out for its blend of elegance and everyday readiness: sapphire crystal for durability, diamond hour markers for subtle sparkle, and a 100 m rating that lets you swim without hesitation. If you want a smaller Swiss automatic watch that feels special yet practical, this is a strong contender. If you need larger sizing, dive-specific features, or detailed movement specs, keep shopping—but for understated luxury you can wear anywhere, it’s easy to recommend.