Technical Archive

Breitling
Superocean A1736402BA31428X— lug 20mm

Breitling Superocean A1736402BA31428X: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Superocean 42

Artisanal Note

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

Technical Specifications

Breitling A1736402BA31428X
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

A1736402BA31428X

Movement

Breitling caliber Caliber 17 Hours, Minutes, Seconds | Date

The Heritage

The Breitling Superocean ref. A1736402BA31428X is a 42mm stainless steel diver's watch featuring the Breitling 17 automatic movement with hours, minutes, seconds, and date. Part of a lineage dating to 1957, it combines diving functionality with everyday wearability through its satin and polished steel finishing and proprietary integrated lug system. The 20mm lug width accommodates standard sport watch straps.

FAQ

What is the lug width of the Breitling Superocean A1736402BA31428X?

The lug width of the Breitling Superocean A1736402BA31428X is 20mm. This measurement is taken between the two lugs of the case using a calliper and is the key parameter for selecting a compatible strap. A strap of a different width will not fit correctly and may cause damage to the lugs or result in unwanted play.

What is the best strap for the Breitling Superocean A1736402BA31428X?

The ideal choice depends on intended use and aesthetic preference. For everyday sporting wear, a 20mm vulcanised rubber or grain calf leather strap is the most coherent option for a diver of this nature. For more formal occasions, an alligator strap with vegetable tanning creates a refined and deliberate contrast. A ballistic nylon NATO strap remains the most practical and versatile solution.

How do you change the strap on a Breitling Superocean A1736402BA31428X?

The Breitling Superocean A1736402BA31428X features a proprietary integrated attachment system. Strap replacement requires a fine-tipped spring bar tool, or the assistance of a watchmaker or specialist atelier. Before purchasing an aftermarket strap, it is advisable to verify that the keeper thickness is compatible with the Breitling case profile, which tends to have closely set lugs.

Are there aftermarket straps compatible with the Breitling Superocean A1736402BA31428X?

Yes. The Breitling Superocean A1736402BA31428X takes a standard 20mm strap, for which a wide range of aftermarket options exists. Milanostraps.it offers a curated selection of handcrafted leather, rubber and textile straps specifically suited to this lug width. Straps with a shaped or slim keeper are recommended to ensure proper fitment against the case.

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

The lifespan of a leather strap depends on the quality of the tanning, hide thickness and frequency of use. A high-quality vegetable-tanned leather strap, kept away from immersion and heavy perspiration, typically lasts between two and four years with regular wear. Casati Milano straps carry an 18-month warranty against manufacturing defects. For a diver such as the Superocean used in water, a rubber or NATO nylon strap is the more technically appropriate choice.