Seiko Conceptual SSB377P1 — WatchNation
Seiko — Conceptual — Authorised UK Retailer
SSB377P1
Quartz Chronograph 8T67  ·  41.5mm Stainless Steel & Bracelet  ·  Blue Sunburst Dial  ·  Tachymeter  ·  100m Water Resistance
WatchNation
Authorised Seiko Retailer
Chester  ·  Est. 10 Years
Authorised UK Retailer 2-Year Warranty Quartz Chronograph Tachymeter Scale Blue Sunburst Dial Luminous Hands 100m Water Resistance Free UK Shipping 30-Day Returns
Conceptual
The SSB377P1 is part of the Seiko Conceptual Collection — a range built around sporty chronograph design and everyday versatility. This model pairs a deep blue sunburst dial with tachymeter scale and luminous silver hands with Seiko's reliable 8T67 Japanese-made quartz chronograph calibre and a classic brushed oyster bracelet for a comprehensive and wearable sports chronograph.
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. You can be confident your watch is 100% authentic, sourced directly from Seiko. Grey market sellers cannot offer this assurance.

02
2-Year Manufacturer's Warranty

Your Seiko Conceptual Chronograph is covered by the full 2-year Seiko manufacturer's warranty — ensuring repairs and replacements are handled directly by the brand. Grey market sellers often offer limited or third-party cover that does not provide the same protection.

03
Accurate Listings & Expert Support

Every listing is thoroughly checked and honestly described. Our team has direct access to Seiko brand training and is available before and after purchase for any questions.

04
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 fully authorised. Grey market sellers may offer limited or third-party warranties that do not provide the same level of protection.
What Sets It Apart
Key Features
Deep Blue Sunburst DialSilver Markers & Luminous Hands
The deep blue dial with subtle sunburst finish provides the SSB377P1's most striking quality — a colour that shifts from rich navy to lighter blue as the light angle changes, giving the watch a visual depth that a flat dial cannot match. Silver baton-style hour markers encircle the dial clearly, and the pointed silver handset with luminous coating ensures strong legibility in both bright and dark conditions. A date window between 4 and 5 o'clock adds practical daily reference.
Three-Register Chronograph60 Min  ·  60 Sec  ·  12 Hour
The chronograph is arranged across three clearly positioned subdials: a 60-minute scale at 12 o'clock, a 60-second scale at 6 o'clock, and a 12-hour scale at 9 o'clock — providing comprehensive elapsed time measurement across a full range of timing intervals and events. Two push-buttons at 4 and 6 o'clock operate the start, stop, and reset functions alongside the standard push/pull crown at 3 o'clock.
Tachymeter ScaleChapter Ring — Speed Calculation
A tachymeter scale encircles the dial on the chapter ring — enabling speed calculation over a measured distance and reinforcing the SSB377P1's classic tool-watch character. The tachymeter is both a functional timing tool and one of the defining visual details of the traditional sports chronograph aesthetic, lending the dial a purposeful complexity that rewards attention.
Seiko 8T67 Quartz CalibreJapanese-Made  ·  36-Month Battery
Powered by Seiko's Japanese-made 8T67 quartz chronograph calibre, the SSB377P1 delivers accurate timekeeping rated at ±15 seconds per month with an impressive 36-month battery life — three years between changes. Reliable, precise, and low-maintenance: the right specification for a watch built to be worn every day without interruption.
41.5mm Brushed Steel CaseHardlex Crystal — 12mm Depth
The 41.5mm brushed stainless steel case at 12mm in depth presents a purposeful, sporty profile — substantial on the wrist without being bulky. Hardlex crystal provides robust protection against scratches and shattering, while a solid Seiko-engraved caseback completes the case construction cleanly. A fixed bezel and crown at 3 o'clock complete the layout.
Brushed Oyster BraceletSeiko-Signed Deployment Clasp
The classic three-link oyster-style bracelet in brushed stainless steel complements the case's brushed finish for a cohesive, integrated look throughout. Fastened with a deployment clasp signed with the Seiko logo, it provides secure and comfortable daily wear — one of watchmaking's most trusted bracelet formats for good reason.
100m Water Resistance10 ATM — Swimming & Snorkelling
Rated to 100 metres / 10 ATM, the SSB377P1 handles swimming, snorkelling, and sustained everyday water exposure with confidence. Not suitable for diving, but entirely appropriate for all the aquatic activity that a sports chronograph is likely to encounter in regular daily use.
2-Year WarrantyFull Seiko Manufacturer Cover
Backed by the full 2-year Seiko manufacturer's warranty — valid exclusively through authorised retailers like WatchNation, ensuring genuine brand-backed protection for your purchase.
2Year Warranty

2-Year Manufacturer's Warranty — Seiko

The Seiko Conceptual SSB377P1 is covered by the full 2-year Seiko manufacturer's warranty, valid exclusively when purchased through an authorised retailer. WatchNation is fully authorised by Seiko — guaranteeing genuine brand-backed protection from day one.

Technical Details
Specifications
Identity
Brand
Seiko
Model Reference
SSB377P1
Collection
Conceptual
Gender
Mens
Movement
Movement Type
Quartz Chronograph
Calibre
Seiko 8T67 — Japanese Made
Accuracy
±15 Seconds per Month
Battery Life
36 Months (approx.)
Complications
Chronograph (3 subdials), Date
Case
Case Material
Stainless Steel — Brushed
Case Diameter
41.5mm
Case Depth
12mm
Bezel
Fixed
Crown
Push/Pull — 3 O'Clock
Pushers
2 — 4 & 6 O'Clock
Crystal
Hardlex
Caseback
Solid — Seiko Logo Engraved
Dial
Dial Colour
Deep Blue — Sunburst
Hour Markers
Silver Baton
Hands
Pointed Silver — Luminous Coated
Subdial — 12 O'Clock
60-Minute Scale
Subdial — 6 O'Clock
60-Second Scale
Subdial — 9 O'Clock
12-Hour Scale
Date Display
Between 4 & 5 O'Clock
Tachymeter
Yes — Chapter Ring
Bracelet
Bracelet Style
Three-Link Oyster — Brushed Stainless Steel
Clasp Type
Deployment Clasp — Seiko Signed
Performance & Warranty
Water Resistance
100m / 10 ATM
Suitable For
Swimming, Snorkelling — Not Diving
Warranty
2 Years — Seiko Manufacturer's Warranty
In the Box
What's Included
✓
Seiko Conceptual SSB377P1 Watch
✓
Original Seiko Packaging
✓
Seiko Warranty Card & Documentation
✓
Instruction Manual
✓
Brushed Oyster Bracelet (fitted)
✓
2-Year Seiko Manufacturer's Warranty
In Detail
About This Watch

The Seiko Conceptual SSB377P1 is a sports chronograph that delivers everything the format should — a rich, legible dial, comprehensive elapsed time measurement, and a specification built for genuine daily use — while doing so with the visual quality of Seiko's sunburst finishing and the reassurance of a brand-backed, authorised purchase. The deep blue sunburst dial shifts in character with the light, providing a visual depth that makes the watch look considerably more distinctive than its category competitors at a comparable price point.

The three-register chronograph layout — 60-minute scale at 12, 60-second scale at 6, 12-hour scale at 9 — is one of watchmaking's most functional and aesthetically satisfying dial configurations. The tachymeter on the chapter ring provides speed calculation capability and the classic sporty visual identity that defines the traditional tool-watch chronograph. A luminous-coated pointed handset ensures strong legibility in low light, and the date window between 4 and 5 o'clock adds the everyday reference that keeps the watch practical through every day it is worn.

The Seiko 8T67 Japanese-made quartz calibre delivers ±15 seconds per month accuracy with a 36-month battery life — three years of wear before a change is needed. The 41.5mm brushed stainless steel case at 12mm deep provides the wrist presence the dial deserves, with hardlex crystal protection and a Seiko-signed solid caseback completing the construction. The brushed three-link oyster bracelet with Seiko-signed deployment clasp integrates seamlessly for a cohesive all-steel sport aesthetic, and 100m water resistance ensures the watch travels through swimming, snorkelling, and everyday life with equal confidence.

Purchased through WatchNation as an authorised Seiko retailer and backed by the full 2-year Seiko manufacturer's warranty, the SSB377P1 is a comprehensive and well-considered sports chronograph bought with complete assurance.

Get in Touch
Questions & Community

Have a question about this watch or your order? Our team is on hand before and after purchase. You're also welcome to join our community on social media for news, new arrivals, and watch content.