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Breitling · Navitimer

Strap for Navitimer Automatic 36 Stainless Steel / Grey / Bracelet

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

18mm
18 mm strapsAll Breitling
Lug width18 mm
Case diameter36 mm
ReferenceA17327381B1A1
FamilyNavitimer
MovementBreitling caliber Caliber 17 ND Hours, Minutes, Seconds
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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The Navitimer A17327381B1A1, seen from the bench

The Breitling Navitimer A17327381B1A1 is a 36mm stainless steel chronograph descending from the 1952 original designed for AOPA pilots. It features the iconic circular slide rule bezel with logarithmic scale for aerial navigation calculations. The case measures 36mm diameter with an 18mm lug width, housing the Breitling 17 ND automatic movement. This 36mm format recalls the proportions of the 1950s–60s original, offering historical authenticity rather than a size reduction.

Frequently asked questions

What is the lug width of the Breitling Navitimer A17327381B1A1?

The lug width of the Breitling Navitimer A17327381B1A1 is 18mm. This measurement is taken internally between the two lugs of the case using a digital calliper and is the critical parameter for strap compatibility.

What is the best strap for the Breitling Navitimer 36mm?

For the 36mm stainless steel Navitimer, a vegetable-tanned Tuscan leather strap in honey or cognac tones is the most coherent choice given the dial's vintage aesthetic. Alternatively, a glossy alligator strap elevates the watch towards a dressier register, whilst a NATO nylon or vulcanised rubber strap suits more active wear.

How do I change the strap on the Breitling Navitimer A17327381B1A1?

Strap replacement requires a spring bar tool. Insert the forked tip into the lug hole to compress the spring bar, slide the strap free, then fit the new strap with the spring bars pre-loaded. Always work on a soft surface to avoid scratching the stainless steel case.

Are there aftermarket straps compatible with the Navitimer A17327381B1A1?

Yes. Any strap with an 18mm lug width is technically compatible with the Navitimer A17327381B1A1. Milanostraps.it offers a curated selection of handcrafted 18mm straps in leather, alligator, shell cordovan and rubber, designed to fit correctly on Breitling's characteristically curved lugs.

How long does a leather strap last on a Breitling Navitimer?

The lifespan of a leather strap depends on tanning quality, frequency of wear and care routine. A vegetable-tanned Tuscan leather strap, kept away from prolonged moisture and conditioned periodically, typically lasts 2–4 years with regular use. Casati Milano straps carry an 18-month warranty 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