Breitling · Superocean Heritage

Strap for Superocean Heritage II B01 Chronograph 44 Blacksteel / Green

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter44 mm
ReferenceMB01621A1L1S1
FamilySuperocean Heritage
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2021
CaseCeramic, Stainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Superocean Heritage MB01621A1L1S1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Superocean Heritage MB01621A1L1S1, seen from the bench

The Superocean Heritage mounts the automatic B01 caliber with chronograph function, column-wheel and chronometer certification. It features hours, minutes, small seconds, date and chronograph. The lugs measure 22mm in width.

Frequently asked questions

What is the lug width of the Breitling Superocean Heritage MB01621A1L1S1?

The Breitling Superocean Heritage MB01621A1L1S1 features a lug width of 22mm. This measurement is taken between the inner edges of the case lugs and is the critical parameter for selecting a compatible strap. A 20mm or 21mm strap will not fit correctly and may result in visible lateral play between the strap and the case.

What is the best strap for the Breitling Superocean Heritage MB01621A1L1S1?

Given the ceramic bezel of the Superocean Heritage MB01621A1L1S1, the most suitable materials are alligator leather in midnight blue or matte black for a formal register, vegetable-tanned calf leather in cognac or tobacco for a sport-casual aesthetic with natural patina development over time, and vulcanised rubber for maximum water resistance in keeping with the watch's diving heritage. The lug width is 22mm.

How do you change the strap on a Breitling Superocean Heritage MB01621A1L1S1?

Strap replacement is carried out using a spring bar tool, which compresses the spring bars housed within the case lugs. Insert the forked tip of the tool into the lateral slot of the lug, compress the spring bar, and slide the strap free. The operation requires no case opening or specialist watchmaking tools. It is advisable to work on a soft surface to prevent scratching the ceramic bezel or the stainless steel case.

Are there aftermarket straps compatible with the Breitling Superocean Heritage MB01621A1L1S1?

Yes. Any strap with a 22mm lug width and standard spring bars is compatible with the Superocean Heritage MB01621A1L1S1, provided the heel geometry suits the curvature of the Breitling lugs. Milano Straps offers a curated selection of handcrafted 22mm straps in leather, NATO, and rubber, tested for compatibility with this reference family, available bespoke or ready to ship.

How long does a leather strap last on a Breitling Superocean Heritage MB01621A1L1S1?

The lifespan of a leather strap depends on the quality of the hide, the tanning process, and daily usage. A high-grade alligator or vegetable-tanned calf leather strap, used regularly but kept away from prolonged water exposure, will maintain structural and aesthetic integrity for 2 to 4 years. Frequent contact with water, perspiration, and UV radiation accelerates deterioration; periodic application of a dedicated leather conditioner significantly extends the strap's service life. Milano Straps provides an 18-month guarantee against manufacturing defects.

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