Bell & Ross · Instruments

Strap for BR-X1 Tourbillon Chronograph Titanium

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter45 mm
ReferenceBRX1-CHTB-TI
FamilyInstruments
MovementBell & Ross caliber BR-CAL.283 hours, minutes | Chronograph, column wheel, monopusher | tourbillon escapement
Year2015
CaseTitanium

Spring bar

Swiss Standard universal spring bars

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

Straps for the Instruments BRX1-CHTB-TI

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Instruments BRX1-CHTB-TI, seen from the bench

The Bell & Ross Instruments BRX1-CHTB-TI is a 45 mm titanium square case watch featuring the Bell & Ross caliber BR-CAL.283 movement with tourbillon escapement and column chronograph mechanism. The 24 mm lug width reflects the geometric design philosophy rooted in 1990s aviation cockpit instrumentation, prioritizing functional clarity and structural rigidity. Titanium construction reduces weight while eliminating internal resonances that could affect movement regulation, offering excellent water resistance and thermal stability.

Frequently asked questions

What is the lug width of the Bell & Ross Instruments BRX1-CHTB-TI?

The lug width of the BRX1-CHTB-TI is 24 millimetres. This is the distance between the two attachment pins on the titanium case. This width is characteristic of large professional and sports watches and is essential to ensure structural stability and aesthetic proportion consistent with the 45-millimetre case diameter.

What is the best strap for the Bell & Ross Instruments BRX1-CHTB-TI?

The best strap depends on intended use. For enduring elegance, alligator in vegetable tanning offers fine grain and natural patina. For everyday versatility, dark brown vegetable-tanned calf leather ensures comfort and longevity. For tactical and nautical environments, a cotton twill or vulcanised rubber NATO provides waterproofing and grip. The ideal choice reflects the predominant context of use.

How do you change the strap on the BRX1-CHTB-TI?

The strap is replaced via the attachment pins (lugs) that connect it to the case. Using a spring bar tool, gently compress the spring, allowing the pin to be extracted from the case hole. The new strap is inserted following the same procedure in reverse. If you lack the tools, a specialised atelier performs the change in minutes, guaranteeing precision and absence of scratches.

Are there compatible aftermarket straps for the 24mm BRX1-CHTB-TI?

Yes, numerous manufacturers offer 24-millimetre aftermarket straps. milanostraps.it offers a specialised collection of <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-24mm">24mm compatible straps</a>, crafted in alligator, vegetable-tanned calf, and rubber. Each strap can be customised in sizing, initials, and thread colour, ensuring technical compatibility and artisanal quality.

How long does a leather strap last on the Bell & Ross Instruments BRX1-CHTB-TI?

A leather strap's lifespan depends on tanning and intensity of use. An alligator strap in vegetable tanning resists 5-8 years before the contact zone requires replacement if exposed to moderate moisture and perspiration. Vegetable-tanned calf lasts 4-6 years in daily use. Vulcanised rubber maintains effectiveness for 6-10 years, whilst cotton twill NATO resists up to 10-12 years if not subjected to tears. Periodic maintenance (cleaning and conditioning treatment for leather) significantly extends longevity.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only