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The Seiko 5 SNXS79 is a 37mm automatic dress-sport watch with a black sunburst dial, day-date complication, and the 7S26 movement. It was part of Seiko’s entry-level 5 collection until roughly 2021, when Seiko rationalised the 5 line under the newer 5 Sports banner and discontinued most of the classic SNX-series references. It remains one of the most collected and most-requested Seiko 5 pieces on the pre-owned market, largely because of an obvious visual resemblance to the Rolex Oyster Perpetual and Datejust of the same era.

If you’re reading this, you’re probably seiko 5 snxs79 either about to buy one or about to talk yourself out of one. Both are reasonable positions.

The full technical specification

•             Case diameter: 37mm

•             Case thickness: 12–13mm depending on measurement point

•             Lug-to-lug: 42–43mm

•             Lug width: 19mm

•             Movement: Seiko caliber 7S26 automatic

•             Jewels: 21

•             Beat rate: 21,600 vph (6 beats per second)

•             Power reserve: ~40–42 hours

•             Winding: Automatic only — no hand-winding, no hacking seconds

•             Water resistance: 30 metres

•             Crystal: Hardlex mineral

•             Case back: Display, shows the 7S26 movement

•             Crown position: 4 o’clock, recessed

•             Dial: Anthracite/black sunburst

•             Complications: Day and date at 3 o’clock (bilingual day wheel)

•             Bracelet: Folded-link stainless steel, all brushed

Why has this specific reference developed a following?

Because of what it does with S$200. The SNXS79 sits at a price point where most competing watches are quartz. The fact that this one is fully seiko 5 snxs79 mechanical, with a day-date function, in a genuinely wearable 37mm case, on an integrated (if basic) bracelet, is the whole story. Add the visible Rolex Oyster Perpetual DNA in the dial layout, applied indices, and case profile, and it’s easy to understand why the SNXS79 keeps appearing on best-value-Seiko lists year after year.

The and its sibling references still surface on collector marketplaces regularly, and current-stock examples through Seiko-authorised international retailers command a premium over their original retail because the model itself is no longer in production.

Where does the SNXS79 fall short?

Three places, if you’re being honest about it.

The movement is non-hacking and non-hand-winding. The 7S26 is bulletproof but basic. You can’t stop the seconds hand to set the time precisely, and you can’t wind the crown to start the watch — you have to shake it or wear it. For daily wearers this is a non-issue. For anyone used to modern automatic conveniences, it’s a genuine adjustment.

The bracelet is folded-link. Not a solid-link construction. Lighter and rattlier than a proper bracelet. Most owners eventually swap to a leather strap or an aftermarket steel bracelet in the 19mm lug width.

The Hardlex crystal scratches. Not badly, but Seiko’s mineral crystal is softer than sapphire. Expect fine surface marks over a couple of years of daily wear.

None of these are dealbreakers at the price. All of them are worth knowing before you commit.

SNXS79 variants — which one is which?

•             SNXS79J1 — Japanese Domestic Market variant. English/Kanji day wheel. Made in Japan.

•             SNXS79K1 — International market. English/Spanish or English/Arabic day wheel depending on batch. Typically Malaysian assembly.

•             SNXS79P — Southeast Asia regional variant.

Functionally identical. The difference is in the day seiko 5 snxs79 wheel language and the origin marking on the dial and case back. Collectors sometimes pay a premium for the J1 solely for the “Made in Japan” text.

Sibling references worth knowing about

The SNXS family shares the case and movement across four dial colours:

•             SNXS73 — silver/white dial

•             SNXS75 — blue dial

•             SNXS77 — grey dial

•             SNXS79 — black/anthracite dial

If you like the SNXS79’s proportions but not the dial, the family has options.

Is it worth buying one today?

For a first mechanical watch, yes. For a small-wrist wearer who wants a proper automatic that isn’t a Nomos, yes. For a collector building a Seiko 5 shelf, obviously yes. The only buyers it doesn’t suit are people who need a modern hacking movement, a serious water resistance rating, or a sapphire crystal in the same price band — for those, look at the current Seiko 5 Sports SRPD/SRPE series instead.

FAQs

Is the Seiko 5 SNXS79 still in production? No. Seiko discontinued the classic SNXS series around 2021 as part of the wider Seiko 5 rebrand. It remains widely available through pre-owned channels and some retailers still holding new-old-stock.

Is the 7S26 movement reliable? Yes. It’s one of the most-produced automatic movements in the world with a strong reputation for longevity, though it’s not particularly accurate — expect ±25 seconds per day.

Does the SNXS79 have sapphire crystal? No. It uses Seiko’s Hardlex mineral crystal.

What size wrist does the SNXS79 suit? Best on wrists 6.25–7.25 inches. The 37mm case and 42mm lug-to-lug wear compact.

Can the SNXS79 be modded? Yes. The 7S26 movement is a modding favourite — sapphire crystal upgrades, aftermarket bracelets, and dial swaps are all common in the modding community.