Authorised U-Boat Retailer
U-Boat Classico Sommerso Ghiera Ceramica Bordeaux Automatic Watch
Colour: Black
· Ref: 9521
£2,850
VAT incl. · Free express delivery
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Colour: Black
Authenticity
Authorized U-Boat dealer
Warranty
Official U-Boat warranty
Shipping
Free · DHL Express
Returns
30 days from delivery
Overview
The 46 mm U-Boat Sommerso Ceramic Burgundy has a burgundy-to-black dial that fades from top to bottom, inside a unidirectional black ceramic bezel.
Built for the water
The watch is water-resistant to 300 meters, ready for swimming and diving. The bezel turns in one direction only, and its graduated ring carries white luminous markings, letting you read elapsed minutes against the scale.
A layered dial with a visible ruby
Brushed metal numerals sit above the three-level dial, with white Super-LumiNova on the hands and hour markers. A visible ruby at 6 o’clock, the 24-hour hand, and the mark on the minute hand add small red details. Anti-reflective sapphire covers the dial, with a magnifying lens over the date window.
Rooted in a 1942 naval design
The watch’s large numerals and protected left-side crown come from Ilvo Fontana’s 1942 plans for an Italian Navy watch that was never built. His grandson Italo revived the design in Lucca. On the Sommerso, the screw-down crown sits beneath U-Boat’s patented protector.
The details
The 46 mm case is satin-finished stainless steel. Seven screws secure the case back.
The Swiss U-28 automatic movement displays the hours, minutes, and seconds, along with the date and a 24-hour indication. It runs at 28,800 vibrations per hour, with 25 jewels and a 38-hour power reserve.
The black vulcanized rubber strap has a calfskin lining with a Kodiak water-repellent treatment. It measures 22 mm at the lugs and closes with a stainless steel pin buckle. The watch is made in Italy.
At a glance
- 24-hour indication
- Unidirectional dive bezel
- Black ceramic bezel insert
- U-28 automatic caliber
- 38-hour power reserve
- 30 atm water resistance
- Magnified date aperture
Specs
Movement
Type
Automatic
Calibre
U-28
Power reserve
38 Hours
Frequency
28800 A/h
Jewels
25 jewels
Case
Material
Stainless steel
Diameter
46 mm
Crystal
Sapphire
Crown
Patented crown protection system
Case back
Screw-fastened
Dial
Color
Black
Calendar
Date (magnified)
Lume
Hands and indices
Water resistance
Rating
30 atm
Strap
Material
Rubber
Color
Black
Width
22 mm
Clasp
Type
Buckle
General
Country of manufacture
Italy
Questions & Answers
How do I read elapsed time on the rotating bezel?
Align its reference marker with the minute hand at the start of an interval, then read elapsed minutes against the bezel scale. Its one-way rotation means an accidental turn can increase the elapsed time shown, rather than reduce it.
What does the 24-hour display tell me?
It distinguishes morning from evening. The main hour hand goes around the dial twice a day, while the 24-hour hand makes one full turn; read it against its own scale to tell, for example, 4 a.m. from 4 p.m.
What does Ghiera Ceramica refer to?
It means ceramic bezel. Ceramic forms the insert in the rotating ring around the dial, while stainless steel forms the case beneath it.
Is the strap on this reference leather or rubber?
The main strap is black vulcanized rubber, with a calfskin lining underneath. Kodiak treatment makes the lining water-repellent; it does not change the strap’s main material.
Still have questions?
Talk to a specialist
Verified Reviews
FAQ
Yes, we are an Official U-Boat Authorised Dealer, and an authorised dealer for every brand we carry.
With over 15 years in the luxury market, we guarantee the authenticity and quality of every piece we sell.
Your order arrives brand new in its original U-Boat packaging, with all official documentation and the U-Boat warranty card, stamped and dated by us.
The warranty covers manufacturing defects. It doesn't cover normal wear and tear or accidental damage — and on watches, it doesn't cover straps, bracelets, or batteries.
Questions about a specific piece? Our specialists are happy to help. [Contact our team →]
Questions about a specific piece? Our specialists are happy to help.
Yes — free DHL Express shipping on all UK orders of £400 or more.
- Orders from £150 to £399.99 ship DHL Express for a flat £9.90
- Orders under £150 ship DHL Express for a flat £19.90
Every order ships with a tracking number, so you can follow your package every step of the way. Shipments are fully insured and delivered by DHL Express with signature required.
Most in-stock orders arrive within 1-2 working days of dispatch.
No — the price you see at checkout is the price you pay.
Our prices include VAT, and nothing is added beyond the delivery charge shown.
DHL will never ask you for a payment on delivery, and no surprise invoice arrives afterward.
No handling charges, no processing fees, nothing added at the door.
We accept all major credit and debit cards, Apple Pay, Google Pay, PayPal, and bank transfer.
- Credit and debit cards — Visa, Mastercard, American Express
- Apple Pay and Google Pay — one-tap checkout, nothing to type
- PayPal — with PayPal Buyer Protection on every purchase
- Bank transfer — often the preference on higher-value orders
Every transaction is fully encrypted, and we never store your card details.
Paying in instalments. Choose PayPal at checkout and you may be offered the option to spread the cost, including interest-free plans on qualifying orders. Plans, terms and eligibility are set by PayPal and shown before you confirm, with no obligation.
Paying by wire, or buying more than one piece? [Contact our team →] and we'll take care of you personally.
You'll find availability on every product page, right above the Add to Cart button. Here's what each status means:
"Dispatched next working day" or "Only 1 left" — the piece is in our warehouse and leaves the working day after you order.
"Dispatched within X working days" — the piece is held at our secondary warehouse. We allow a few days to inspect and authenticate it before dispatch.
"Check delivery date" — the piece is available to order, but we confirm the exact date with the brand. As soon as you order, we contact the manufacturer and email you an estimated date.
Need something by a specific date? Tell us and we'll check before you buy. [Contact our team →]
You have 30 days from delivery to return your order.
How returns work. Just let us know and we'll email you a prepaid DHL Express return label — you never have to arrange a shipment or pay anything up front. The return cost is deducted from your refund. If the piece arrived damaged or wasn't what you ordered, the return is on us.
Your refund options.
- Credit (issued as a gift card) — processed almost immediately once your return reaches us
- Refund to your original payment method — typically 5–10 working days, depending on your bank
To qualify for a full refund, the piece must:
- Be unused and in perfect condition, with no signs of wear
- Include its original packaging and outer box
- Include all original documentation, accessories, and the warranty card
- Not be engraved or personalised — custom pieces are made to order and can't be returned
Not sure whether something qualifies? Ask us before you ship it back — we'll tell you straight. Contact our team.
TALK TO A SPECIALIST
Still have questions?
Our specialists are here before and after you buy — no pressure, no obligation. Authorised dealer, official warranty, and guaranteed authenticity on every piece.
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