Seiko SUR373P1 — WatchNation
Seiko — Conceptual / Quartz Dress — Blue Sunburst Dial · Titanium Case & Bracelet · 8mm
SUR373P1
Calibre 6N52  ·  Sapphire Crystal  ·  Titanium — 40% Lighter than Steel  ·  100m
WatchNation
Authorised Seiko Retailer
Chester  ·  Est. 10 Years
Authorised UK Retailer Titanium Case & Bracelet Blue Sunburst Dial Sapphire Crystal 8mm Ultra-Slim Dauphine Hands Free UK Shipping 30-Day Returns
Titanium
The SUR373P1 is the titanium variant of Seiko's slim Conceptual dress range — the same blue sunburst dial, polished dauphine handset, sapphire crystal, and 8mm ultra-slim profile as the SUR309P1, but in a titanium case and brushed titanium bracelet that is approximately 40% lighter than stainless steel and naturally hypoallergenic.
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What Sets It Apart
Key Features
Titanium Case & Bracelet~40% Lighter than Stainless Steel
The titanium case and bracelet is the single most significant specification difference between the SUR373P1 and its stainless SUR309P1 sibling — and it has two consequences that matter in daily wear. First, titanium is approximately 40% lighter than stainless steel, meaning the combined weight of the case and bracelet on the wrist is dramatically reduced despite identical case dimensions. At 8mm and 40.2mm, the SUR373P1 is already the slimmest watch in the Conceptual range; in titanium, it is also the lightest. Second, titanium's natural oxide layer makes it almost entirely resistant to corrosion and non-reactive to skin — a genuine practical advantage for anyone with metal sensitivities.
Highest Strength-to-Weight RatioTitanium — Superior Metal Properties
Titanium has the highest strength-to-weight ratio of all known metals — delivering a case and bracelet construction that is simultaneously lighter and harder-wearing than stainless steel. The durability of a dress-watch metal that requires no compromise between wearability and longevity.
Blue Sunburst DialDauphine Hands · Luminous Baton Indices
The blue sunburst dial — shifting dynamically under changing light — with a polished dauphine handset and luminous baton-style indices is identical in specification to the stainless SUR309P1. Dauphine hands carry a classical dress-watch refinement that flat functional hands do not, and the luminous treatment on both hands and index-marker tips ensures readability in low light without cluttering the clean dial layout.
Sapphire CrystalScratch-Resistant Clarity
A sapphire crystal protects the blue sunburst dial — maintaining the dial's optical clarity and distinctive light-shifting character across daily wear, in the same specification as the stainless SUR309P1 and the Essentials line.
8mm Ultra-Slim Profile40.2mm Dress Case
At just 8mm thick in a 40.2mm titanium case, the SUR373P1 shares the slimmest profile in WatchNation's Seiko Conceptual selection. The ultra-slim profile disappears beneath a shirt cuff without resistance or bunching — and in titanium, the watch's presence on the wrist is reduced further still by the material's lower weight.
Brushed Titanium BraceletPush-Button Deployment Clasp
A brushed titanium three-link bracelet with a push-button deployment clasp completes the titanium package — the brushed finish giving the bracelet a matte, sophisticated quality suited to the dress-watch brief, and the deployment clasp providing secure, precise fastening appropriate to the lightweight bracelet's character.
Calibre 6N52Quartz · ±15s/Month · 36-Month Battery
The Seiko Calibre 6N52 — Japan-made quartz movement with ±15 seconds per month accuracy and a 36-month battery life. Consistent, low-maintenance timekeeping for the years of daily formal wear that the SUR373P1's titanium construction and slim profile invite.
100m Water Resistance10 Bar — Swim & Snorkel Capable
Rated to 100 metres / 10 bar — suitable for swimming and snorkelling. The 100m rating combined with titanium's inherent corrosion resistance makes the SUR373P1 the most practically durable and water-ready of the slim Conceptual dress references.
Date DisplayFramed Window at 3 O'Clock
A framed date window at 3 o'clock adds everyday calendar utility within the clean dress-watch dial layout — the framed aperture a finishing detail consistent with the SUR309P1's dial specification.
Technical Details
Specifications
Identity
Brand
Seiko
Model Reference
SUR373P1
Collection
Conceptual
Movement
Movement Type
Quartz
Calibre
Seiko 6N52
Accuracy
Approx. ±15 seconds per month
Battery Life
36 months
Case & Crystal
Case Material
Titanium
Diameter
40.2mm
Thickness
8mm
Bezel
Fixed — Slim
Crystal
Sapphire Crystal
Crown
Push/Pull — 3 O'Clock
Dial
Dial Colour
Blue — Sunburst Finish
Hands
Polished Dauphine — Luminous
Indices
Polished Baton — Luminous Tips
Date Display
Yes — Framed Window, 3 O'Clock
Bracelet
Bracelet Material
Titanium — Brushed Finish
Clasp
Push-Button Deployment Clasp
Performance
Water Resistance
10 bar / 100m
Corrosion Resistance
Titanium Oxide Layer — Hypoallergenic
In the Box
What's Included
Seiko SUR373P1 Watch
Original Seiko Presentation Box
Seiko Warranty Card & Documentation
Titanium Bracelet (fitted)
In Detail
About This Watch

The Seiko Conceptual SUR373P1 is the titanium variant of Seiko's slim dress-watch Conceptual line — sharing the blue sunburst dial, polished dauphine hands, sapphire crystal, and 8mm ultra-slim profile of the stainless SUR309P1, but elevating the material specification to full titanium case and brushed titanium bracelet. For buyers who have decided they want the slim Conceptual dress reference and are now choosing between stainless and titanium, the case is simple: titanium is approximately 40% lighter, more resistant to corrosion, and non-reactive to skin. At 8mm and already the thinnest watch in the Conceptual range, the added lightness of titanium makes a perceptible difference to the wearing experience — the watch sits on the wrist with almost no perceivable weight.

Titanium's properties are genuinely unusual among common watch case materials. Its natural oxide layer provides corrosion resistance that stainless steel cannot match without surface treatment, and its non-reactivity to the human body makes it the appropriate choice for anyone with metal sensitivities who would otherwise find stainless steel bracelets problematic after extended wear. The brushed finish on the bracelet gives the titanium a sophisticated matte quality that suits the dress-watch brief without the formality of a polished surface — a considered choice for the material. The push-button deployment clasp provides precise and secure fastening appropriate to a lightweight bracelet that moves with the wrist rather than against it.

The dial specification is unchanged from the stainless SUR309P1: blue sunburst, polished dauphine handset, luminous baton indices, framed date window at 3, sapphire crystal. The Calibre 6N52 provides quartz accuracy at ±15 seconds per month with a 36-month battery. 100m water resistance, combined with titanium's inherent corrosion resistance, makes the SUR373P1 the most practically durable of the slim Conceptual dress references for active daily wear. A well-specified, premium-material dress quartz from an authorised Seiko retailer.