Seiko SNXS75K1 — WatchNation
Seiko — Seiko 5 Collection — Since 1963
SNXS75K1
Automatic Movement  ·  Silver Sunburst Dial  ·  LumiBrite  ·  Open Caseback  ·  3-Year Warranty
WatchNation
Authorised Seiko Retailer
Chester  ·  Est. 10 Years
Authorised UK Retailer Full Manufacturer Warranty Free UK Shipping 30-Day Returns Chester City Centre
Our Commitment
Why Buy from WatchNation?
01
Fully Authorised Seiko Retailer

Every watch we sell is backed by the full Seiko manufacturer's warranty — available exclusively through authorised stockists. Grey market sellers cannot offer this.

02
10 Years of Experience

Over a decade selling watches, with a strong, verified eBay feedback record built on honest listings and genuine customer care.

03
Accurate Listings

Every listing is thoroughly checked and comprehensively described. What you see in our photographs is precisely what you receive.

04
UK-Based Customer Service

Our team is available before and after purchase — always happy to provide additional photographs or further information on any item we list.

05
30-Day Returns & Free UK Shipping

Every order ships free within the UK, carefully packaged to arrive in perfect condition. A 30-day returns policy ensures you can purchase with complete confidence.

Please note — The Seiko manufacturer's warranty is only valid when the watch is purchased from an authorised retailer. WatchNation is an authorised Seiko retailer.
What Sets It Apart
Key Features
Calibre 7S2621-Jewel Automatic
Seiko’s exclusive in-house automatic movement with 21 jewels, wound continuously by the natural motion of the wrist — no battery required. A proven, time-trusted calibre at the heart of every Seiko 5.
Silver Sunburst DialGold Baton Hands & Indices
A silver sunburst dial that shifts subtly under changing light, paired with gold baton-style hour markers and a matching gold handset. The Seiko 5 logo is presented neatly in gold beneath 12 o’clock — refined and understated.
LumiBrite™Luminous Indices & Hands
Gold baton indices and hands are filled with LumiBrite luminous material, ensuring clear readability in low-light conditions and after dark — practical functionality built into the dress-watch aesthetic.
Day & Date DisplayGold-Framed Window at 3 O'Clock
Both the day and date are displayed in a single gold-framed window at 3 o’clock — one of the five defining attributes of the Seiko 5, adding everyday practicality with a finishing detail that complements the gold tones throughout.
Open CasebackMovement Visible
The exhibition open caseback exposes the movement in full, allowing you to watch the rotor wind the mainspring with every movement of the wrist — a rewarding window into mechanical watchmaking.
37mm Polished CaseDress-Watch Proportions
A 37mm polished case with a minimalist circular profile and fixed bezel — classic dress-watch proportions that sit comfortably beneath a shirt cuff and translate naturally across formal and smart casual settings.
Three-Link Oyster BraceletDeployment Clasp
A classic three-link oyster-style stainless steel bracelet celebrated for its balance of practicality and elegance. Fastens with a deployment clasp for a secure, comfortable fit throughout the day.
3-Year WarrantyUpgraded October 2024
Seiko extended their warranty to a full three years from October 2024. Covers the movement, case, and metal bracelet. UK service centre in Maidenhead, Berkshire.
3Year Warranty

Seiko Manufacturer's Warranty — Included in Full

Covers the movement, case, and metal bracelet for three years from date of purchase. Seiko's UK Service & Repair Centre is based in Maidenhead, Berkshire. Valid exclusively through authorised retailers only.

Technical Details
Specifications
Identity
Brand
Seiko
Model Reference
SNXS75K1
Collection
Seiko 5
Movement
Movement Type
Automatic — In-House
Calibre
Seiko 7S26
Jewels
21
Winding
Automatic (rotor-wound)
Case
Material
Stainless Steel
Diameter
37mm
Finish
Polished
Bezel
Fixed — Polished
Caseback
Open Exhibition Caseback
Crown Position
Recessed — 4 o'clock
Dial & Crystal
Crystal
Hardlex — Mineral Crystal
Dial Colour
Silver Sunburst
Indices
Gold Baton — LumiBrite Fill
Hands
Gold Baton — LumiBrite Fill
Display
Three-Hand (hours, minutes, seconds)
Day & Date Display
Yes — gold-framed window, 3 o'clock
Bracelet & Clasp
Bracelet Material
Stainless Steel
Bracelet Style
Three-Link Oyster
Clasp
Deployment Clasp
Performance & Warranty
Water Resistance
30m — Suitable for light splashes
Warranty
3 Years — Seiko Manufacturer's Warranty
In the Box
What's Included
Seiko SNXS75K1 Watch
Original Seiko Presentation Box
Seiko Warranty Card & Documentation
Instruction Manual
Spare Bracelet Links (if sizing requested)
3-Year Manufacturer's Warranty
In Detail
About This Watch

The SNXS75K1 is a refined and elegant entry in the Seiko 5 family, bringing dress-watch sensibility to an automatic collection built on five core principles since 1963: automatic winding, a combined day-date display, water resistance, a recessed crown at 4 o’clock, and a durable metal bracelet. At just 37mm in diameter, the polished circular case presents classic dress-watch proportions — slim, understated, and equally at home beneath a formal cuff or paired with smart casual attire.

The silver sunburst dial is where this watch earns its character. The finish shifts subtly under changing light, far removed from a flat painted surface. Gold baton-style hour markers and a matching gold handset are both filled with LumiBrite luminous material for clear after-dark readability — a practical detail woven seamlessly into the refined aesthetic. The gold-framed day-date window at 3 o’clock mirrors the warm tones throughout and adds genuine everyday utility. The Seiko 5 logo in gold beneath 12 o’clock completes a dial that is disciplined, cohesive, and quietly distinguished.

Powering it is Seiko Calibre 7S26 — an exclusive in-house automatic movement with 21 jewels, wound continuously by the natural motion of the wrist. The open exhibition caseback exposes the movement in full, revealing the rotor as it winds the mainspring with each turn of the wrist — a satisfying reminder that this is a genuine mechanical timepiece. Both the front crystal and caseback are protected by Seiko’s Hardlex mineral crystal for enhanced scratch and impact resistance.

The classic three-link oyster-style stainless steel bracelet fastens with a deployment clasp for a secure, comfortable fit throughout the day. With 30 metres of water resistance, the SNXS75K1 handles light splashes and everyday exposure without concern — a dress automatic that combines elegance, mechanical integrity, and the enduring character of the Seiko 5.