Technical Archive

Breitling
Superocean A13311C91B1A1— lug 20mm

Breitling Superocean A13311C91B1A1: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Superocean Chronograph 42 Stainless Steel / Black / Bracelet

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Breitling A13311C91B1A1
Lug Width
20 mm

The essential strap measurement.

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Reference

A13311C91B1A1

Movement

Breitling caliber Caliber 13 Hours, Minutes, Small Seconds | Date | Chronograph

The Heritage

The Breitling Superocean Chronograph 42 Stainless Steel model A13311C91B1A1 features a 42mm stainless steel case with a professional dive watch heritage dating to the 1950s. Powered by the Breitling Caliber 13 automatic movement (derived from ETA Valjoux 7750, COSC certified), it offers hours, minutes, small seconds at 6 o'clock, date, and chronograph functions. The 20mm lug width accommodates standard professional-grade straight-end straps, ensuring precise mounting with Milano Straps compatible models.

FAQ

What is the lug width of the Breitling Superocean A13311C91B1A1?

The lug width of the Breitling Superocean A13311C91B1A1 is 20mm. This measurement is taken with a digital calliper positioned inside the lugs at the strap attachment point. Any standard 20mm strap is directly compatible without the need for adapters.

What is the best strap for the Breitling Superocean A13311C91B1A1?

For the Breitling Superocean A13311C91B1A1, the most coherent options given the watch's technical and sporting character are: vulcanised rubber for aquatic use, matte black or navy alligator for formal occasions, and boxcalf leather for daily wear. A ballistic nylon NATO strap works well in casual contexts. A brushed steel deployant clasp is recommended to optimise security and elevate the overall wrist presentation.

How do you change the strap on a Breitling Superocean A13311C91B1A1?

To replace the strap on the Breitling Superocean A13311C91B1A1, a fine-tipped spring bar tool is required. Insert the tip into the lug notch, compress the spring bar and slide it out. The operation is fully reversible without specialist equipment. It is advisable to work on a soft surface to avoid scratching the satin-finished case, and to use 20mm stainless steel replacement spring bars.

Are there aftermarket straps compatible with the Breitling Superocean A13311C91B1A1?

Yes. Any strap with a standard 20mm attachment is compatible with the Breitling Superocean A13311C91B1A1. Milano Straps offers a curated selection of handcrafted straps — in leather, rubber and fabric — available bespoke or from catalogue, with straight or tapered ends depending on aesthetic preference. An 18-month production defect guarantee is included.

How long does a leather strap last on a Breitling Superocean A13311C91B1A1?

The lifespan of a leather strap depends on the type of hide, frequency of use, and exposure to perspiration and moisture. On a sports model such as the Superocean, a good-quality calfskin strap typically lasts 12 to 24 months with regular wear. Vegetable-tanned alligator lasts longer due to its dense fibrous structure. For intensive or aquatic use, it is advisable to alternate with a rubber strap to preserve the leather.