Technical Archive

Breitling
Superocean A173666A1B1S1— lug 20mm

Breitling Superocean A173666A1B1S1: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Superocean 42 Stainless Steel / Black - Premiers de Cordée

Artisanal Note

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

Technical Specifications

Breitling A173666A1B1S1
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

A173666A1B1S1

Movement

Breitling caliber Caliber 17 Hours, Minutes, Seconds | Date

The Heritage

The Breitling Superocean A173666A1B1S1 is a professional diving watch rooted in the 1950s, featuring a 42mm stainless steel case with satin finish and a unidirectional rotating bezel. Powered by the Breitling Caliber 17 automatic movement, it displays hours, minutes, seconds and date. The 20mm lug width accommodates a wide range of strap options while maintaining the watch's clean proportions and technical character.

FAQ

What is the lug width of the Breitling Superocean A173666A1B1S1?

The Breitling Superocean A173666A1B1S1 features a 20mm lug width. This standard measurement allows the original strap to be replaced with a wide range of aftermarket options, including leather, rubber and nylon, ensuring compatibility with most artisan strap makers.

What is the best strap for the Breitling Superocean A173666A1B1S1?

The Superocean A173666A1B1S1 pairs particularly well with premium rubber straps for sport use, or with vegetable-tanned calfskin featuring a marked grain for urban-casual wear. Matte alligator is recommended for business-casual settings, while a technical nylon NATO strap enhances the model's tool watch character.

How do you change the strap on a Breitling Superocean?

To replace the strap on a Breitling Superocean, use a fine-tipped spring bar tool. Insert the tool into the gap between the lug and the strap, compress the spring bar and slide the strap free. Fit the new strap by pressing the spring bar into the lug holes until it clicks into place. The operation takes only a few minutes; take care not to scratch the case.

Are there aftermarket straps compatible with the Breitling Superocean A173666A1B1S1?

Yes, any strap with a 20mm attachment is compatible with the Breitling Superocean A173666A1B1S1. milanostraps.it offers a curated selection of handcrafted straps in leather, alligator, rubber and NATO, all with 20mm lugs and steel buckles or deployant clasps. Casati Milano also provides fully bespoke made-to-measure solutions.

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

The lifespan of a leather strap on a dive watch such as the Superocean depends on usage conditions. In urban environments, a quality vegetable-tanned leather strap will last 2 to 4 years, developing an attractive patina over time. Prolonged exposure to salt water or perspiration accelerates fibre degradation. Rubber is recommended for intensive water use, reserving leather for dry contexts. Casati Milano straps carry an 18-month warranty against manufacturing defects.