Seiko 5 SNXS79 Review: Complete Guide to the 37mm Dress Watch

The Seiko 5 SNXS79 delivers classic dress watch styling in a compact 37mm × 13mm stainless steel case powered by the proven 7S26 automatic movement (21 jewels, 21,600 vph, 41-hour reserve) with distinctive dark rhodium sunburst dial creating gray-to-black depth depending on lighting. Priced $150-$200 on the secondary market as of 2025 (Seiko discontinued this reference), the SNXS79 earned its reputation as the "most affordable Rolex Oyster Perpetual alternative" through clean dial design, quality finishing at entry-level pricing, and 37mm sizing ideal for smaller wrists seeking elegant proportions.

This complete review covers technical specifications, design and aesthetics (why the dark rhodium dial is considered the most luxurious of the SNXS series), 7S26 movement reliability and limitations (no hacking or hand-winding versus modern 4R movements), SNXS79 vs SNXS73 vs SNXS77 dial color comparison, real-world wearability for different wrist sizes, value proposition analysis, and whether you should buy this discontinued classic or opt for current-production Seiko 5 models with upgraded movements.

Quick Verdict: Should You Buy the Seiko 5 SNXS79?

Buy the SNXS79 if you:

• Need a compact dress watch under 38mm for smaller wrists (6.5" or less)
• Want classic Rolex Oyster Perpetual aesthetics at 1/30th the price ($150-200 vs $6,000+)
• Prioritize proven 7S26 movement reliability over hacking/hand-winding features
• Appreciate dark gray sunburst dials that shift from charcoal to black with lighting
• Seek versatile watch suitable for both business formal and casual weekend wear

Skip the SNXS79 if you:

• Require hacking (stop-seconds) and hand-winding capabilities (choose 4R-powered Seiko 5 models instead)
• Need substantial water resistance beyond 30 meters (SNXS79 is splash-resistant only)
• Prefer larger modern watch sizing (40mm+) matching current trends
• Want brand-new warranty and availability (SNXS79 discontinued, secondary market only)
• Demand chronometer-grade accuracy (7S26 runs ±20-49 sec/day versus COSC ±6 sec/day)

The Bottom Line: The SNXS79 excels as an entry-level dress watch prioritizing timeless design, compact proportions, and proven reliability over modern movement features. At $150-200, it delivers exceptional value for buyers who appreciate 37mm sizing and don't need hacking or hand-winding. However, if those features matter, current-production Seiko 5 models with 4R35/4R36 movements (like SRPD or SRPE series) offer better functionality at $200-300 with warranty coverage.

Complete Technical Specifications

Key Specification Takeaways: The SNXS79's 37mm diameter and 43mm lug-to-lug create ideal proportions for wrists 6.5"-7.5", while the 13mm thickness keeps the profile dressy under shirt cuffs. The 7S26 movement's lack of hacking and hand-winding reflects its mid-1990s design era but doesn't compromise the legendary reliability Seiko movements deliver. The 30-meter water resistance is the watch's most significant limitation—sufficient for daily wear and rain exposure but inadequate for swimming or showering.

Design and Aesthetics: Why the Dark Rhodium Dial Stands Out

The Signature Sunburst Rhodium Dial

The SNXS79's dark rhodium dial distinguishes it from siblings in the SNXS lineup. The sunburst finishing creates dynamic depth—viewed head-on in direct light, the dial appears medium charcoal gray with subtle green undertones; at angles or in lower light, it darkens to near-black with glossy appeal. This chameleon-like quality adds visual interest to an otherwise minimalist design, creating luxury watch aesthetics typically found in pieces costing 10x-30x more.

Watch enthusiasts frequently cite the SNXS79's rhodium dial as the "most luxurious" and "richest-looking" among the SNXS series (which includes silver SNXS73 and blue SNXS77). The dark tone creates versatility—formal enough for business suits, understated enough for weekend casual wear. The dial's subtle complexity rewards close examination while maintaining legibility from arm's length.

Applied Indices and Polished Hands

Rather than printed markers, the SNXS79 features applied polished indices at all hour positions (except 3 o'clock where day/date windows reside). These three-dimensional markers catch light at different angles, adding refinement and depth unavailable with flat-printed dials. White luminous material fills the indices for low-light visibility, though lume performance is modest compared to Seiko's dive watch lineup—adequate for checking time in dark rooms but insufficient for extended nighttime legibility.

The polished dauphine hands complement the applied indices with tapered elegance. Their slim profile maintains dress watch proportions while providing clear time reading against the dark dial. Like the indices, the hands receive white lume treatment (lume performance matches the indices—functional but not exceptional).

Case Finishing and Proportions

The 37mm stainless steel case combines brushed top surfaces with polished sides, creating visual contrast that elevates the watch beyond its entry-level price point. This mixed finishing—common in luxury Swiss watches—adds dimension and disguises minor scratches acquired through daily wear (brushed surfaces hide micro-scratches better than polished finishes).

The case proportions deserve particular attention: 37mm diameter × 13mm thickness × 43mm lug-to-lug creates the "Goldilocks sizing" for smaller wrists (6.5" or below) seeking dress watch elegance without oversized modern dimensions. The 43mm lug-to-lug is especially critical—it ensures the watch sits comfortably on wrists without lugs extending beyond the wrist's natural curve (a common problem with 44mm+ watches on smaller wrists).

The "Affordable Rolex" Comparison

Reviewers frequently describe the SNXS79 as the "cheapest Rolex Oyster Perpetual homage" available. While "homage" overstates the relationship (the SNXS79 doesn't copy specific Rolex design elements), the comparison highlights the watch's clean, classic aesthetic reminiscent of Rolex's entry-level Oyster Perpetual or vintage Datejust models: simple round case, integrated bracelet, day/date complications at 3 o'clock, and restrained dial design prioritizing legibility and elegance.

The SNXS79 achieves 80-90% of the Oyster Perpetual's visual appeal at 3% of the cost ($175 average versus $6,000+ for Oyster Perpetual 36mm). For buyers seeking classic dress watch styling without luxury brand premiums, this value proposition proves compelling.

The 7S26 Movement: Reliability Without Modern Features

Proven Workhorse Heritage

The Seiko Caliber 7S26, introduced in 1996, powered countless legendary Seiko models including the SKX007/009 dive watches and early Seiko 5 Sport references. Its reputation centers on exceptional reliability and durability—user reports consistently document 7S26 movements running 10-20+ years without service under normal wearing conditions. This longevity stems from Seiko's conservative engineering philosophy: the 7S26 prioritizes proven architecture and robust construction over maximum performance specifications.

The Magic Lever automatic winding system—Seiko's proprietary bi-directional winding mechanism developed in the 1950s—converts rotor motion in both directions into mainspring winding with remarkable efficiency using fewer parts than traditional pawl-based systems. This simplicity contributes to the 7S26's reliability; fewer components mean fewer potential failure points.

The Hacking and Hand-Winding Tradeoff

The 7S26's most significant limitation compared to modern movements: it lacks both hacking (stop-seconds function) and hand-winding capability. When you pull the crown to set time, the seconds hand continues running, making precise time synchronization impossible. You also cannot manually wind the mainspring via the crown—the watch winds exclusively through automatic rotor motion or by shaking the watch to activate the rotor.

For casual single-watch wearers, these limitations rarely matter. If you wear the SNXS79 daily, the automatic winding keeps the movement running indefinitely, and precise-to-the-second time setting isn't necessary for non-professional use. However, watch collectors rotating multiple pieces find the lack of hand-winding frustrating—you cannot wind a stopped SNXS79 before wearing it, requiring vigorous shaking or waiting for the rotor to build power reserve through wrist motion.

Seiko addressed these limitations with the 4R35/4R36 movements (introduced 2010), which added hacking and hand-winding while maintaining the 7S26's reliability heritage. Current-production Seiko 5 models use these upgraded movements, making the 7S26-powered SNXS79 a vintage curiosity representing pre-2010 Seiko engineering.

Accuracy and Regulation

Seiko rates the 7S26 at +45/-35 seconds daily accuracy—a wide tolerance reflecting its entry-level positioning. Real-world performance typically runs ±20 seconds daily for well-regulated examples, though individual variation means some units run ±10 seconds while others reach ±40 seconds daily.

The 21,600 vph (3 Hz) frequency is slower than 28,800 vph Swiss movements, contributing to wider accuracy tolerances. However, for daily wear where you check your smartphone for precise time anyway, ±20 seconds proves entirely adequate—you'll adjust the watch once weekly at most.

Watchmakers can regulate 7S26 movements to improve accuracy (±10-15 seconds daily achievable through skilled regulation), though this temporary improvement doesn't address underlying wear. If accuracy degrades significantly beyond initial performance, the movement likely requires service (cleaning, lubrication, and regulation).

Service Life and Maintenance

The 7S26's robust construction typically delivers 10-15 years between services under normal wearing conditions, with many examples running 20+ years without maintenance. Service intervals depend on wearing frequency: daily wearers reach service requirements around year 10-12, while occasional wearers extend intervals to 15-20 years due to lower accumulated running time.

When service becomes necessary, replacement economics favor the 7S26. Complete movement replacements cost $80-$120 including installation—often equal to or less than full service costs ($150-$250). Many watchmakers recommend movement replacement rather than overhaul for 7S26-powered watches, essentially installing a "new engine" for comparable cost to rebuilding the old one.

SNXS79 vs SNXS73 vs SNXS77: Choosing Your Dial Color

The SNXS series shares identical specifications across all references—the only difference is dial color. Understanding each option helps you choose based on aesthetic preference:

SNXS79 - Dark Rhodium Gray (Reviewed Here)

Best For: Buyers wanting the most versatile and "luxurious-looking" dial that works equally well with business formal attire and casual weekend wear.

Aesthetics: Sunburst dark gray that shifts from charcoal to near-black depending on lighting and viewing angle. Subtle green undertones add complexity. The darkest dial option in the series.

Versatility: Highest versatility—the dark neutral tone pairs with virtually any outfit color. Formal enough for black-tie events, understated enough for jeans and t-shirt.

Market Preference: Watch enthusiasts frequently cite the SNXS79 as the most "rich" and "luxurious" looking of the trio, making it the most popular SNXS reference on the secondary market.

SNXS73 - Silver Dial

Best For: Buyers preferring traditional dress watch aesthetics with maximum legibility and lighter, brighter dial presence.

Aesthetics: Bright silver sunburst dial that's lighter and more reflective than the SNXS79. Creates strong contrast with polished indices and hands for excellent legibility in all lighting conditions.

Versatility: Classic dress watch look that excels with business formal wear. The bright dial may appear too formal for casual weekend outfits compared to the SNXS79's darker, more understated tone.

Legibility: Best legibility of the three options due to high contrast between silver dial and dark hands/indices.

SNXS77 - Blue Dial

Best For: Buyers wanting a distinctive, slightly less formal appearance with more personality and color.

Aesthetics: Sunburst blue dial with silver-toned indices and hands creating visual contrast. The blue adds character and distinguishes the watch from standard black/gray/silver dress watches.

Versatility: Less versatile than gray or silver—blue dials pair best with navy, gray, and earth-tone clothing. Can clash with certain outfit colors (browns, warm tones).

Market Appeal: The blue dial appeals to enthusiasts wanting something distinctive while maintaining dress watch elegance. Slightly less formal than silver, more personality than gray.

Which Should You Choose?

If you can only own one SNXS watch: choose the SNXS79 dark rhodium for maximum versatility and the most luxurious appearance. The dark dial works in any context—boardroom to beach—and the shifting gray-to-black tone adds visual interest without sacrificing dress watch formality.

Choose the SNXS73 silver if you wear primarily business formal attire and prioritize maximum legibility, or if you prefer traditional dress watch aesthetics.

Choose the SNXS77 blue if you want a watch with more personality and don't need maximum versatility, or if blue dials align with your wardrobe (navy suits, gray slacks, denim).

Wearability and Comfort

The 37mm Sweet Spot for Smaller Wrists

The SNXS79's 37mm case diameter positions it perfectly for wrist sizes 6.5"-7.5". On 6.5" wrists, the watch wears slightly large with presence appropriate for dress occasions. On 7.5" wrists, it appears proportionally balanced without looking undersized. The critical measurement—43mm lug-to-lug—ensures the watch sits comfortably on smaller wrists without lugs overhanging the wrist's natural curve.

For comparison, modern 40-42mm watches often feature 48-52mm lug-to-lug dimensions that overwhelm wrists under 7". The SNXS79's compact proportions create the elegant, refined aesthetic dress watches achieved from the 1950s-1990s before oversized watch trends dominated the market.

Buyers with 7.75"+ wrists may find the SNXS79 too small for their preferences, especially if accustomed to 40mm+ modern sizing. On larger wrists, the watch appears delicate or feminine versus contemporary 42mm standards. For big-wristed buyers wanting Seiko 5 dress watches, consider current-production SRPD series models in 40mm sizes.

Bracelet Comfort and Quality

The stainless steel 5-link Jubilee-style bracelet delivers comfort appropriate for entry-level pricing. The multi-link design conforms to wrist contours better than rigid 3-link bracelets, distributing weight evenly and reducing pressure points. The folding clasp with push-button release operates smoothly and feels secure during daily wear.

However, the bracelet reveals its budget origins through certain characteristics: noticeable jangle/rattle during wrist motion (links have slight play), hollow end links (versus solid construction in luxury watches), and basic stamped clasps (versus milled clasps). These compromises keep costs low but mean the bracelet feels less substantial than Swiss alternatives costing $500+.

Many SNXS79 owners immediately replace the factory bracelet with leather straps—the 19mm lug width accepts countless aftermarket strap options. Brown or black leather instantly elevates the watch's dress credentials while eliminating bracelet jangle. NATO straps create casual versatility for weekend wear.

Weight and Presence

At approximately 95-100 grams on the bracelet, the SNXS79 feels lightweight compared to modern stainless steel watches weighing 130-180 grams. This lightness stems from the compact 37mm case and hollow bracelet links. The modest weight disappears on the wrist during daily wear—you'll forget you're wearing it within minutes.

Whether lightweight presence appeals depends on personal preference. Some wearers appreciate the unobtrusive comfort; others interpret lightness as "cheap feeling" compared to heavier Swiss watches. On leather straps, weight drops to ~70 grams, creating barely-there wrist presence ideal for all-day formal wear under dress shirts.

Water Resistance Reality

The 30-meter water resistance (3 ATM) is the SNXS79's most significant practical limitation. This rating indicates splash resistance only—suitable for handwashing, rain exposure, and incidental water contact, but NOT swimming, showering, or submersion. The Hardlex crystal's pressure seal and crown gasket provide minimal water protection designed for dress watch use in dry environments.

For daily office wear and social occasions, 30 meters proves adequate. However, if your lifestyle involves water sports, frequent swimming, or desire for shower-wearing convenience, the SNXS79 disappoints. Consider Seiko 5 Sports models with 100-meter ratings (SRPD/SRPE series) for water-friendly versatility while maintaining automatic movement functionality.

Value Proposition: $150-$200 for Discontinued Classic

Secondary Market Pricing (2025)

With Seiko discontinuing the SNXS79, availability exists exclusively on the secondary market. Chrono24 listings show mint-condition examples trading $150-$200 as of 2025, with well-worn pieces occasionally appearing at $120-$140. The market has appreciated modestly—prices increased 2.4% over five years and 10.2% over the past year, suggesting stable demand for this classic reference despite discontinued status.

At $150-$200, the SNXS79 delivers exceptional value for buyers prioritizing classic aesthetics and proven reliability over modern movement features. You're essentially paying for:

• Legendary 7S26 movement with 10-20 year service-free operation typical
• Timeless 37mm dress watch proportions increasingly rare in modern catalogs
• Quality case finishing (mixed brushed/polished) rivaling $500 competitors
• Discontinued classic status with modest appreciation potential
• Rolex-inspired aesthetics at 3% of Oyster Perpetual pricing

Comparing Alternatives

Current Seiko 5 Models (SRPD/SRPE Series) - $200-$300: Offer upgraded 4R35/4R36 movements with hacking and hand-winding, 100-meter water resistance, and modern 40-42mm sizing. Better functionality and warranty coverage, but larger dimensions unsuitable for smaller wrists wanting 37mm elegance. Choose these if you need modern features and can accommodate 40mm+ cases.

Orient Bambino - $120-$180: Delivers similar dress watch aesthetics in 40.5mm sizing with domed crystal and classic dial designs. Uses Orient's in-house automatic movements with hacking and hand-winding. More affordable but larger sizing (40.5mm vs 37mm) and less bracelet quality. Choose if you want hand-winding capability and slightly larger proportions.

Citizen Automatic Dress Watches - $150-$250: Offer comparable quality with Miyota movements, often including exhibition casebacks. Similar value proposition but less heritage cachet than Seiko's legendary 7S26. Consider if you prioritize value over brand recognition.

Vintage Seiko 5 (1970s-1990s) - $75-$150: Earlier Seiko 5 references with similar 7S26 or predecessor movements. Often smaller (34-36mm) with more varied dial designs. Cheaper but older (requiring service soon), riskier condition variability, and harder to source quality examples. Choose if you want vintage charm and accept condition risks.

Who Gets the Best Value?

The SNXS79 delivers maximum value for:

• Smaller-wristed buyers (6.5" or below) seeking elegant proportions impossible to find in current 40mm+ catalogs
• Dress watch enthusiasts prioritizing timeless aesthetics and proven reliability over modern movement features they won't use
• Budget-conscious buyers wanting Rolex-inspired styling at entry-level automatic pricing
• Vintage Seiko collectors appreciating the SNXS79 as a discontinued classic with modest appreciation potential
• First-time automatic buyers needing reliable, low-maintenance introduction to mechanical watches

The value proposition weakens for buyers needing hacking/hand-winding (choose 4R-powered alternatives), substantial water resistance (choose dive-rated models), or modern 40mm+ sizing (choose SRPD series).

Frequently Asked Questions

Does the Seiko 5 SNXS79 have hacking and hand-winding?

No, the SNXS79 uses the Seiko Caliber 7S26 movement, which lacks both hacking (stop-seconds function) and hand-winding capability. When you pull the crown to set time, the seconds hand continues running, preventing precise-to-the-second time synchronization. You also cannot manually wind the mainspring via the crown—the watch winds exclusively through automatic rotor motion activated by wearing the watch or shaking it. Seiko introduced these features in later 4R35/4R36 movements (2010+), which power current-production Seiko 5 models. If hacking and hand-winding matter for your use case (watch collectors rotating multiple pieces find hand-winding essential), choose newer Seiko 5 references with 4R movements like SRPD or SRPE series instead of the discontinued SNXS79.

What size wrist does the SNXS79 fit best?

The SNXS79's 37mm diameter and 43mm lug-to-lug dimensions fit wrists 6.5"-7.5" optimally. On 6.5" wrists, the watch wears with slight presence appropriate for dress occasions without appearing oversized. On 7.5" wrists, it looks proportionally balanced and refined. The critical measurement is the 43mm lug-to-lug—this ensures the watch sits flat on smaller wrists without lugs extending beyond the wrist's natural curve (a common problem with modern 44mm+ watches featuring 50mm+ lug-to-lug on sub-7" wrists). Buyers with 7.75"+ wrists may find the SNXS79 too small or delicate compared to contemporary 40-42mm standards. For larger wrists wanting Seiko 5 dress styling, consider current SRPD series models in 40mm sizing instead.

Can you swim with the Seiko SNXS79?

No, the SNXS79's 30-meter (3 ATM) water resistance is splash-resistant only and NOT suitable for swimming, showering, or submersion. The 30-meter rating indicates the watch can handle handwashing, rain exposure, and incidental water contact, but lacks the pressure sealing required for swimming or underwater use. Seiko designed the SNXS79 as a dress watch for dry-environment wear in office, social, and formal settings. If you need a Seiko 5 watch for swimming or water activities, choose models with minimum 100-meter water resistance like the SRPD or SRPE dive-style series. If you accidentally expose the SNXS79 to significant water (shower, pool), have it inspected by a watchmaker to check for moisture intrusion before internal corrosion develops.

Is the SNXS79 still in production or discontinued?

The Seiko 5 SNXS79 is discontinued and no longer in production as of 2025. Seiko phased out the SNXS series as it transitioned from 7S26 movements to upgraded 4R35/4R36 calibers offering hacking and hand-winding capabilities. The SNXS79 is available exclusively on the secondary market through platforms like Chrono24, eBay, and watch forums. Mint-condition examples typically sell for $150-$200, with well-worn pieces occasionally appearing at $120-$140. Prices have appreciated modestly (2.4% over 5 years, 10.2% over 1 year), suggesting stable demand for this discontinued classic. When buying secondhand, verify authenticity, check movement operation, inspect case/crystal for damage, and confirm bracelet condition to ensure you receive a quality example worth the investment.

What's better: SNXS79 or current Seiko 5 models with 4R movements?

It depends on your priorities. Choose the SNXS79 if you need compact 37mm sizing for smaller wrists (6.5"-7.5"), prefer classic discontinued aesthetics with modest appreciation potential, and don't require hacking or hand-winding features. The SNXS79 costs less ($150-$200 secondary market) and offers timeless proportions increasingly rare in modern catalogs. Choose current Seiko 5 models with 4R35/4R36 movements (SRPD/SRPE series, $200-$300 new) if you need hacking and hand-winding capabilities, want 100-meter water resistance for swimming/showering, prefer modern 40-42mm sizing, or require warranty coverage. The 4R movements deliver better functionality but come in larger cases unsuitable for smaller wrists. Both options offer proven Seiko reliability—the decision centers on size preference (37mm vs 40mm+) and whether you'll actually use hacking/hand-winding features justifying $50-$100 premium and larger dimensions.

Conclusion: Classic Elegance for Smaller Wrists

The Seiko 5 SNXS79 succeeds as an entry-level dress watch prioritizing timeless 37mm proportions, proven 7S26 reliability, and Rolex-inspired aesthetics at accessible $150-$200 pricing. This discontinued classic delivers exceptional value for smaller-wristed buyers (6.5"-7.5") seeking elegant dress watch sizing impossible to find in modern 40mm+ catalogs, while the dark rhodium sunburst dial creates versatility suitable for business formal and casual weekend contexts equally.

Success with the SNXS79 requires accepting three tradeoffs inherent to its 7S26 movement heritage: no hacking or hand-winding (fine for daily single-watch wearers, frustrating for collectors rotating pieces), ±20 seconds daily accuracy (adequate for casual use, imprecise versus COSC standards), and 30-meter splash resistance only (office-appropriate, inadequate for swimming or active lifestyles). These limitations enable the watch's strengths—legendary reliability with 10-20 year service-free operation typical, discontinued classic status with modest appreciation, and compact proportions matching vintage dress watch elegance.

Your decision framework: Choose the SNXS79 if you have smaller wrists (6.5"-7.5") and prioritize classic 37mm sizing, don't need hacking or hand-winding, and want proven reliability at $150-$200. Skip it if you require modern 4R movement features, substantial water resistance, or contemporary 40mm+ proportions—current SRPD/SRPE Seiko 5 models deliver better functionality with warranty coverage at $200-$300.