Tudor · Style

Strap for Style 34 Stainless Steel / Fluted / Silver-Diamond / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter34 mm
Reference12310-0011 (aka: M12310-0011)
FamilyStyle
MovementTudor caliber T601 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Spring bars for Tudor

The right category for this model · choose the 20 mm size

Straps for the Style 12310-0011 (aka: M12310-0011)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Style 12310-0011 (aka: M12310-0011), seen from the bench

The Tudor Style 12310-0011 is a 34mm stainless steel watch with a 20mm lug width, featuring the Tudor caliber T601 automatic movement with COSC certification and approximately 38 hours power reserve. The case offers 100 meters water resistance, sapphire crystal with anti-reflective coating, and a clean dial with baton indices and date window at 3 o'clock. The 20mm lug width is standard for this Style collection and requires specifically dimensioned aftermarket straps for proper fit without gaps.

Frequently asked questions

What is the lug width of the Tudor Style 12310-0011?

The Tudor Style 12310-0011 features a 20-millimetre lug width. This dimension is standard across the Style collection and must be observed when selecting an aftermarket strap. You can verify this measurement by measuring the space between the two lugs at the case base using a digital calliper.

What is the best strap for the Tudor Style 12310-0011?

The optimal choice depends on your intended use. For formal elegance, alligator or shell cordovan in brown or burgundy tones are recommended. For casual-sports styling, NATO straps in robust nylon or vulcanised rubber offer water resistance and minimal maintenance. Vegetable-tanned calf leather provides versatile aesthetics that improve visually with age.

How do I change the strap on the Tudor Style 12310-0011?

Strap replacement requires a spring bar remover tool. Position the tool's thin end beneath the small metal spring (spring bar) connecting the strap to the lug, apply gentle upward pressure until the spring retracts, then carefully withdraw the strap. Insert the new strap by aligning its holes with the spring bars and press until you hear a secure click.

Can I use an aftermarket strap on this watch?

Yes, provided the strap is dimensioned specifically for a 20mm lug width. Any strap compatible with this measurement—whether leather, rubber, or NATO textile—is fully interchangeable. Avoid 18mm or 22mm straps, which would either be excessively loose or impossible to install.

How long does a leather strap last on the Tudor Style 12310-0011?

Longevity depends on leather quality and intensity of wear. An alligator or shell cordovan strap with vegetable tanning, rotated with other straps, lasts 5–7 years. Daily continuous wear reduces this to 2–3 years. Rubber straps typically endure 4–6 years. Casati Milano provides an 18-month warranty as standard.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only