Authorized U-Boat Retailer
U-Boat Classico Tungsteno Chronograph Automatic Watch
Color: Green
· Ref: 9581
$4,100$5,000
save $900 · 18% OFF
Color: Green
Authenticity
Authorized U-Boat dealer
Warranty
Official U-Boat warranty
Shipping
Free · DHL Express
Returns
30 days from delivery
Overview
U-Boat Classico Tungsteno Chronograph Automatic Watch with Green Dial.
The Classico line goes back to the diving watch Ilvo Fontana drew in 1942 for the Italian naval forces, a design that stayed on paper, and it carries the left-hand crown that drawing put there. This one times elapsed intervals from a dial cut on 3 levels, under a polished tungsten bezel. The case measures 45 mm in stainless steel 316L.
The movement is automatic. It runs a mechanical calibre modified to the specifications of the house.
The green dial is cut on stepped levels, so the counters and the hour track read at different depths under the crystal. It is worn on brown leather.
At a glance
- Chronograph
- Dial cut on stepped levels
- Polished tungsten bezel
- 62-hour power reserve
- Exhibition case back
- Patented left-hand crown guard
- Superluminova on hands and indices
Specs
Type
Automatic
Diameter
45 mm
Crystal
Anti-reflective Sapphire
Rating
10 atm
Type
Buckle
Country of manufacture
Italy
Movement
Type
Automatic
Power reserve
62 Hours
Frequency
28800 A/h
Jewels
25 jewels
Case
Material
Stainless Steel 316L
Diameter
45 mm
Crystal
Anti-reflective Sapphire
Case-back crystal
Sapphire Glass
Crown
Patented crown protection system
Case back
Screw-fastened
Dial
Color
Green
Calendar
Day
Lume
Hands and indices
Lume material
Superluminova
Water resistance
Rating
10 atm
Strap
Material
Leather
Color
brown
Width
22mm
Clasp
Type
Buckle
General
Gender
Men
Country of manufacture
Italy
Warranty
3 years
Questions & Answers
Why does the crown sit on the left?
It comes from a watch Ilvo Fontana drew in 1942 for the Italian naval forces, a diver whose crown sat on the left so the hands could be set from that side. His grandson Italo Fontana built the house in Lucca around that drawing, and the patented clamp over the crown is the part he added.
How do you run the chronograph?
The upper pusher starts and stops the timing hand and the lower one returns it to zero. The registers on the dial carry the minutes and the hours that the central hand has counted past its first turn.
Why is the bezel made of tungsten?
Tungsten is far harder than steel, so a polished tungsten bezel holds its mirror finish through the knocks that would dull a steel one. The house counts it among its own innovations, alongside the crown on the left and the patented release that frees it from its stop.
What can you see through the case back?
The movement from the bridge side, with the oscillating weight that winds the mainspring as the wrist moves and the balance swinging at the far end. The house cuts that weight open so the gear train stays in view behind it.
How does a 45 mm case sit on the wrist?
It is a large watch and the house builds it to read as one. Compare the figure against a watch you already own before you order, because the diameter is what decides this and it is the measurement a photograph flattens. A loose cuff will pass over it.
Still have questions?
Talk to a specialist
Verified Reviews
FAQ
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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.
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"In stock, ships within 24 hours" or "Only X units left" — the item is in our warehouse and ships the next business day after you order.
"In stock, ships within X days" — the item is held at our secondary warehouse. We allow a few days to inspect and authenticate it before it ships.
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- Orders from $150 to $249.99 ship DHL Express for a flat $9.90
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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 2–3 business days, depending on your location.
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The price you pay at checkout is the final price of the item delivered to your address.
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Paying by wire, or buying more than one piece? [Contact our team →] and we'll take care of you personally.
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 shipping cost is deducted from your refund. If the item arrived damaged or wasn't what you ordered, the return is on us.
Your refund options.
- Store credit (issued as a gift card) — processed almost immediately once your return reaches us
- Refund to your original payment method — typically 5–10 business days to appear, depending on your bank or card issuer
To qualify for a full refund, the item 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
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