Bremont · Martin-Baker

Strap for MB III GMT Orange

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

Lug width22 mm
Case diameter43 mm
ReferenceMBIIIOr
FamilyMartin-Baker
MovementBremont caliber BE-93-2AE hours, minutes, seconds, Additional 24 hours Hand (adjustable) | date | chronometer
Year2014
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 Martin-Baker MBIIIOr

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Martin-Baker MBIIIOr, seen from the bench

The Bremont Martin-Baker MB III GMT Orange is a 43mm stainless steel sports watch featuring the Bremont caliber BE-93-2AE automatic movement with hours, minutes, seconds, 24-hour GMT hand, date, and COSC Chronometer certification. It offers 300 meters water resistance and a bidirectional rotating bezel for timing operations. The 22mm lug width ensures proper proportions with the case diameter.

Frequently asked questions

What is the exact lug width of the Bremont Martin-Baker MBIIIOr?

The lug width of the Bremont Martin-Baker MBIIIOr is 22mm. This dimension is measured internally, by positioning a calliper between the case lugs (the contact points that accommodate the strap). Even minor variance compromises strap fit and the aesthetic transition between case and instrument.

What type of strap pairs best with the Bremont Martin-Baker MBIIIOr?

For the MBIIIOr we recommend three primary solutions: Louisiana alligator for those seeking natural patina evolution over time; vegetable-tanned calf for a more classical aesthetic and controlled softness; premium NATO strap for versatile configurations and rapid changes. Choice depends on primary use: flying and dynamic activity require rubber or NATO; formal contexts require structured leather.

How do I change the strap on a Bremont Martin-Baker MBIIIOr?

Changing the MBIIIOr strap requires a specific tool: a spring bar removal tool. Position the fine tip beneath the spring that secures the strap at one lug end, lift gently until the spring retracts, and slide the strap outward. Repeat on the opposite end. Reverse the procedure to install the new strap, ensuring the spring bar is fully seated in its housing.

Can I use third-party compatible straps on a Bremont Martin-Baker MBIIIOr?

Yes. Any strap with 22mm lug width is compatible with the MBIIIOr, regardless of manufacturer. Quality aftermarket straps enable aesthetic personalisation coherent with the instrument's identity. We recommend verifying that the strap features robust stitching (minimum 0.8mm thread diameter) and that total thickness does not exceed 4.5mm to prevent friction with the case lugs.

How long does a leather strap typically last on a Bremont Martin-Baker MBIIIOr?

A high-quality leather strap (alligator or vegetable-tanned calf) has a durability span of 3–5 years with moderate daily use. Longevity depends on: frequency of use, exposure to moisture and perspiration, regular maintenance (cleaning with damp cloth and conditioning with natural wax every 6 months), and prolonged direct sunlight exposure. A fluoroelastomer rubber strap exceeds 5 years without visual deterioration of finish.

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