Sherpa · Compressor

Strap for OPS

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

Lug width20 mm
Case diameter40 mm
Reference001/02/01
FamilyCompressor
MovementSherpa caliber Mantramatic MM01 hours, minutes, seconds | date
Year2023
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 Compressor 001/02/01

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Compressor 001/02/01, seen from the bench

The Sherpa Compressor mounts the Mantramatic MM01 automatic caliber with hour, minute, second and date indication. The watch features 20mm lugs and uses an in-house proprietary movement. The 001/02/01 reference identifies this specific version of the model.

Frequently asked questions

What is the exact lug width of the Sherpa Compressor 001/02/01?

The Sherpa Compressor 001/02/01 features a lug width of 20mm. This dimension, measured between the centres of the mounting holes on the case lugs, is critical for compatibility and safety. A strap with a different lug width (18mm, 22mm) will not fit correctly, resulting in undesired movement or risk of detachment during wear. Always verify this measurement before purchasing an aftermarket strap.

Which strap type is recommended for the Compressor 001/02/01?

For the Sherpa Compressor 001/02/01, the most suitable strap options are: alligator or calf leather with vegetable tanning (for formal environments and patina longevity), NATO cotton (for constructive robustness and ease of maintenance), FKM Viton rubber (for aquatic environments and extreme temperatures). The choice depends on intended use: an alligator strap enhances sophistication, cotton NATO echoes military tradition, rubber guarantees diving performance. All must be constructed with a 20mm lug width.

How do I change the strap on a Sherpa Compressor 001/02/01?

To change the strap: 1) Obtain a Spring Bar Tool (standard watch tool). 2) Place the watch on a stable surface. 3) Insert the fine tip of the tool into the spring bar hole. 4) Apply gentle lateral pressure to compress the spring. 5) Remove the lug from the old strap. 6) Repeat on the other side. 7) Insert the lugs into the new strap's spring bars (20mm lug width), ensuring the spring mechanism clicks securely into place. Never force: the mechanism should engage smoothly and audibly.

Can I mount an aftermarket strap on the Compressor 001/02/01?

Yes, you can mount an aftermarket strap on the Sherpa Compressor 001/02/01, provided it strictly adheres to the 20mm lug width specification. Straps manufactured to this standard (leather, NATO, rubber) are fully compatible and ensure both functionality and aesthetic coherence with the original design. Milanostraps.it offers an extensive selection of bespoke 20mm straps, customisable according to your chromatic and material preferences. Always confirm that the lugs and stitching are precision-fitted for the Compressor case.

How long does a leather strap last on a dive watch like the Compressor 001/02/01?

A quality leather strap (alligator, calf, shell cordovan with vegetable tanning) has an estimated lifespan of 5–8 years under moderate use with regular maintenance. Durability decreases significantly if exposed frequently to salt water or extreme temperatures—prolonged moisture accelerates deterioration. For the Compressor 001/02/01, if you anticipate frequent diving or aquatic contexts, alternating leather straps with FKM rubber options is advisable. The patina a leather strap develops over time is an aesthetic merit; however, once structural fragility is evident, replacement is necessary to prevent accidental detachment.

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