Bremont · Solo

Strap for Solo 37 Black

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

Lug width20 mm
Case diameter37 mm
ReferenceSolo37BkSi
FamilySolo
MovementBremont caliber BE-36AE Hours, Minutes, Seconds | Date, Day | Chronometer
CaseStainless 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 Solo Solo37BkSi

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Solo Solo37BkSi, seen from the bench

The Bremont Solo features the BE-36AE caliber with chronometer certification and indications of hours, minutes, seconds, date and day. The model has 20mm lugs and construction in accordance with chronometric precision standards. The Solo37BkSi reference is part of the collection dedicated to precision time measurement instruments.

Frequently asked questions

What is the lug width of the Bremont Solo37BkSi?

The Bremont Solo37BkSi features a lug width of 20mm, a non-standard measurement requiring specifically compatible straps. Measurement must be taken on the inner face of the lugs from shoulder to shoulder using a digital or mechanical calliper for accuracy. This dimension is characteristic of the Solo line and determines entirely the choice of aftermarket strap.

Which strap is recommended for the Bremont Solo37BkSi?

For the Solo37BkSi we recommend three solutions: alligator in neutral tones (grey, brown, black) for formal elegance; vegetable-tanned calf for appreciating natural leather ageing; a NATO strap in technical canvas for aviator-casual emphasis. The choice depends on use context: formal, daily or sporting. Each material must feature a 20mm lug width.

How do I change the strap on my Bremont Solo37BkSi?

Strap change on the Solo37BkSi requires two tools: a quality spring bar tool and a small file for any adjustments. Position the watch with the case facing downward, insert the tool under the spring bar to compress the internal spring, remove the bar and old strap. Insert the new 20mm strap onto the bars and push until click. Avoid excessive force which could damage the lugs.

Can I use an aftermarket strap with 20mm lug width on my Solo37BkSi?

Yes, any aftermarket strap specifically designed for 20mm lug width is compatible with the Solo37BkSi. Our straps for this width are available in leather (alligator, calf, shell cordovan), NATO and rubber. We recommend always verifying that the strap is explicitly labelled 20mm to avoid tension during installation. Custom straps from Atelier Casati Milano offer unique sartorial adjustments.

How long does a leather strap last on a Bremont Solo37BkSi?

A quality leather strap (alligator, vegetable-tanned calf) lasts on average 3-5 years with daily use, depending on climate, perspiration and maintenance. Vegetable-tanned calf ages gracefully, developing characteristic patina. Alligator, being more robust, extends lifespan to 6-7 years. FKM rubber offers maximum longevity (10+ years) but without aesthetic evolution. Periodic cleaning with damp cloth and rapid drying preserves the leather.

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