Cestrian Ocean Series Blue Fumé Dial Silicone Strap Automatic GMT Men's Watch CO-BBS002
AVAILABLE TO PRE-ORDER
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Shipping begins mid-February.
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The Ocean Series GMT continues Cestrian’s philosophy of building dependable, purpose-driven watches designed for real-world use, combining robust dive-watch capability with the added practicality of a second time-zone function. Engineed as a true everyday sports watch, it balances durability, legibility, and versatility in a format that feels equally at home on land, in the water, or during travel.
At its core is the reliable NH34 automatic GMT movement, chosen for its proven performance and ease of service, allowing the wearer to track a second time zone with clarity and precision. The solid stainless-steel case is built to withstand daily wear and demanding conditions, supported by a screw-down crown, sapphire crystal, and 200 metres of water resistance, ensuring the watch remains ready for adventure without compromise.
The deep blue fumé dial transitions gradually from a rich central tone to darker outer edges, creating a layered sense of depth enhanced by the galvanic finishing process. Applied indexes with polished surrounds provide crisp contrast, while Swiss Super-LumiNova delivers reliable legibility in low-light environments. The polished nickel handset, paired with an orange-tipped seconds hand and lumed GMT hand, reinforces the watch’s functional design while maintaining a refined visual balance.
Completing this version is a black Cestrian-branded silicone strap, finished with the Cestrian shield and engineered for durability, flexibility, and long-term comfort. Secured with a classic pin buckle for a dependable fit, it enhances the watch’s sport-ready character while offering lightweight practicality for travel and active wear. Like every Ocean Series model, this piece is built with longevity and usability in mind — a capable, travel-ready dive watch that prioritises function, reliability, and honest value.
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UK Delivery
| Selling Price | Royal Mail 48 (Tracked) |
Royal Mail 24 (Tracked & Signed) |
Special Delivery Next Day (Mon – Fri) |
Special Sunday Delivery (Before Sat 12pm) |
Royal Mail Special Delivery by 1pm |
|---|---|---|---|---|---|
| £0 to £99.99 | FREE | £4.99 | £7.99 | £7.99 | £9.99 |
| £100 to £499.99 | N/A | FREE | £7.99 | £7.99 | £9.99 |
| £500 or more | N/A | N/A | FREE | £7.99 | £9.99 |
We know your order is important to you, so we use Royal Mail’s tracked delivery service on all UK orders.
We also offer Royal Mail Special Delivery service, which for an additional fee offers guaranteed delivery the next day before 1pm.
*Royal Mail Tracked 24 and Royal Mail Tracked 48 services are 98% accurate but not guaranteed.
Orders placed before 5pm (Monday–Friday) are dispatched the same day. Orders placed on Saturday or Sunday are dispatched the following Monday.
International Shipping & Duties (Delivered At Place – DAP)
We’re pleased to offer worldwide delivery with fully tracked and insured shipping.
How international orders work
All international orders are shipped on DAP (Delivered At Place) terms. This means:
- The price you pay at checkout covers your goods and international shipping only.
- WatchNation does not collect or charge any overseas sales tax, import VAT, or customs tariffs (duties).
- When your order reaches your country, local customs authorities may apply:
- Import VAT (value-added tax),
- Tariffs or customs duties (import taxes based on product category and value), and
- Handling or clearance fees from the courier.
These charges are set by your country’s customs authority and are payable by you before delivery.
You’ll be contacted directly by DHL with a secure link to pay any applicable charges. Once cleared, your parcel will be released and delivered promptly.
Estimated delivery times (after dispatch)
- European Union: approximately 2–5 working days
- Rest of World: approximately 5–7 working days
Customs processing times vary by country and may extend delivery slightly.
If import charges, tariffs, or duties are not paid
If local charges are unpaid or delivery is refused, the shipment will be returned to us. In this case, we will refund your order minus the outbound shipping cost and any return or customs fees billed to us by the carrier.
Estimating import costs
Import VAT and duty rates vary by country. You can check estimated import taxes and tariffs by contacting your local customs authority or using your government’s online import calculator.
More about delivery...
MIYOTA 8215 AUTOMATIC MOVEMENT
- Bi-directional rotor self and manual wind with hacking movement
- 42 hour power reserve
- Tolerance of -20 to +40 seconds a day
- Beat rate: 21,600
THREE-LINK OYSTER STYLE BRACELET
- Fully brushed finish, providing the watch with a distictive utilitarian feel.
316L STAINLESS STEEL CASE & BRACELET
- Surgical grade steel
- Extra-low carbon means it is ultra-resistant to corrosion and high temperatures
- Typically found on watches at a much higher price point
WATER RESISTANT TO 200M
- High water resistance for a GADA watch, ensuring it can withstand more and last longer
SAPPHIRE CRYSTAL GLASS WITH TRIPLE LAYER ANTI-REFLECTIVE COATING
- Super resistant to scratches
- Minimises glare for maximum clarity
- Robust and hard-wearing, typically seen as the most sought-after glass for a watch
APPLIED INDEXES
- Adds depth and shape to the dial
- Angled metal surrounds expertly compliment natural light
- A better quality and long-lasting addition than painted indexes
LUMINOUS HANDS & MARKERS
- Swiss Super-LumiNova coating on the hands and markers. Absorbs solar light throughout the day, meaning it ‘charges’ as you wear the watch
CLOSED CASE BACK
- The addition of an etched closed case-back provides added durability, while bestowing the watch with a more streamlined case profile.
PUSH BUTTON DEPLOYMENT CLASP
- More secure than traditional clasps
- Allow the watch to be unbuckled without widening, meaning it is much simpler to take on and off
PRINTED LOGO
- Printed Cestrian shield logo placed on the dial for a refined finish
SERIAL NUMBER
- Every watch is provided a serial number, guaranteeing provenance and ensuring traceability
SCREW-DOWN CROWN
- Helps deliver maximum water resistance, allowing the watch to live up to its dive credentials
- Also makes it difficult for dust and other unwanted particles to enter the watch, preserving its lifespan
Ocean Series
BUILT FOR TRAVEL. DESIGNED FOR DAILY WEAR.
The Ocean Series balances technical function with restraint. Nothing oversized. Nothing unnecessary. Just purposeful design, executed properly.
A bi-directional 24-click bezel allows you to track a second time zone at a glance, while 200m water resistance ensures the watch is ready for swimming, travel, and everyday life without hesitation.
BUILT FOR TRAVEL
AUTOMATIC NH34 GMT MOVEMENT
Powered by the Seiko NH34 automatic GMT movement, the Ocean Series lets you track a second time zone independently via a dedicated 24-hour hand. It’s a proven, globally serviceable movement chosen for reliability, accuracy, and everyday wear.
This is a functional GMT designed to be used — whether you’re crossing borders or keeping track of home time on the move.
DESIGNED FOR TIME ZONES
24-CLICK GMT BEZEL
The bi-directional 24-click bezel is tuned specifically for GMT use, allowing quick, precise tracking of a second time zone at a glance. Each click is deliberate, tactile, and confidence-inspiring.
Unlike dive bezels adapted for GMTs, this bezel is engineered from the ground up for travel functionality.
everyday-ready
200m WATER RESISTANCE
With a 200m water resistance rating, the Ocean Series is built to handle far more than desk duty. From swimming and coastal travel to daily wear in unpredictable conditions, it’s engineered to perform without hesitation.
No special treatment. No second guessing. Just dependable protection wherever you go.
CLARITY THAT LASTS
SAPPHIRE CRYSTALWITH TRIPLE-LAYER AR
A scratch-resistant sapphire crystal protects the dial, enhanced with a triple-layer anti-reflective coating to reduce glare and maximise legibility in all lighting conditions.
The result is a crystal that stays clear, sharp, and readable — whether under bright sunlight or low indoor light.
DESIGNED TO WEAR ALL DAY
ENGINEERED FOR COMFORT
The Ocean Series features a quick-release bracelet for effortless strap changes, paired with a push-button deployment clasp and integrated diver’s extension for on-the-fly adjustment.
Whether worn snug on the wrist or expanded for comfort, it’s built to stay comfortable — not just look good.
SWISS SUPER-LUMINOVA® LUME
Legibility when light disappears.
Applied to the hands, indices, and key dial markers, Swiss Super-LumiNova® ensures the Ocean Series remains readable long after daylight fades. The glow is clean, even, and purposefully balanced — bright enough to perform, refined enough not to overwhelm.
Whether checking the time mid-flight, at night, or in low-light conditions, the Ocean Series stays clear and instantly legible when it matters most.
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Frequently Asked Questions
The term "Cestrian" is derived from the Latin name for Chester, "Deva Cestrianorum," and is typically used to refers to something or someone associated to the city of Chester in England. The brand originates in Chester and pays tribute to its roots. Chester is known for its rich heritage, stunning medieval architecture, and a vibrant atmosphere that seamlessly blends history with modern delights.
All Cestrian watches are proudly designed in the United Kingdom.
Currently all Cestrian watches are manufactured in China, through our close relationships with suppliers and manufacturers. China has become a global hub for watch production, offering a unique combination of high-quality manufacturing capabilities and cost efficiencies. Our decision to manufacture in China enables us to keep our production costs down without compromising on the quality of our watches.
Due to their mechanical nature, automatic watches have a tolerance. All Cestrian watches have a tolerance of -20 to +40 seconds a day thanks to their reliable Seiko NH35 automatic movement.
In order to limit costs and keep prices low, Cestrian follows a direct to consumer model. Our focus is on building our relationship directly with our customers through our website. We also sell on Amazon, eBay and Chrono24 to offer added convenience to our customers. WatchNation is an official launch partner for Cestrian and is the only other Authorised Dealer.
No, all Cestrian watches exclusively utilise automatic movements. We firmly stand by the notion that the craftsmanship, mechanical ingenuity, reliability, and timeless allure of automatic watches surpass any other alternative. Battery-powered quartz watches do not align with our vision, and thus we remain committed to the excellence of automatic watches.
We understand that for a variety of reasons, you may not be the original owner. As long as you have the original warranty card and a copy of the invoice, the warranty will remain valid for the 24 months from the original date of purchase.
Sizing the bracelet will not impact your warranty. Any abnormal damaged caused from incorrectly sizing the bracelet however may impact your warranty.