Breitling · Navitimer

Strap for Navitimer Automatic 36 Stainless Steel / Grey / Alligator

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

Lug width18 mm
Case diameter36 mm
ReferenceA17327381B1P1
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

The Navitimer A17327381B1P1, seen from the bench

The Navitimer Automatic 36 Stainless Steel is a 36mm professional pilot's watch born in 1952 for AOPA pilots. The reference A17327381B1P1 features an ivory dial with three counters, a logarithmic slide rule bezel, and a Breitling 17 ND automatic movement derived from Caliber 7750 architecture. The stainless steel case houses hours, minutes, and seconds with certified chronometric precision. The 18mm lug width defines compatible strap specifications for this model.

Frequently asked questions

What is the lug width of the Breitling Navitimer A17327381B1P1?

The Breitling Navitimer A17327381B1P1 has a lug width of 18mm. This measurement must be taken with a calliper between the two lugs at the point of contact with the strap. Any compatible strap must have an attachment width of exactly 18mm.

What is the best strap for the Breitling Navitimer A17327381B1P1?

For the 36mm steel Navitimer with an ivory dial, a vegetable-tanned calf leather strap in tobacco or cognac tones offers the best balance between technical character and aesthetic coherence. Alligator is recommended for formal settings; shell cordovan for those seeking maximum durability and a deep patina over time. A nylon NATO strap remains consistent with the model's aviator origins.

How do you change the strap on the Breitling Navitimer A17327381B1P1?

Strap replacement requires a spring bar tool or a flat-head screwdriver with a rounded tip to compress the spring bar inward within the lug. It is advisable to work on a soft surface to protect the crystal and case. If in doubt, the operation can be carried out by a watchmaker or at the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling Navitimer A17327381B1P1?

Yes. Any strap with an 18mm attachment width and a standard spring bar is compatible with the Navitimer A17327381B1P1. Milano Straps offers a curated selection of handcrafted leather, rubber and nylon straps specifically selected for the 18mm lug width, with finishes suited to the Navitimer's stainless steel case.

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

Longevity depends on the material and frequency of daily wear. A quality vegetable-tanned calf strap, with periodic conditioning cream application, typically lasts 2–4 years. Shell cordovan can exceed 5 years due to its dense fibre structure. Alligator, if not frequently exposed to moisture, retains structural integrity for 3–5 years. Casati Milano straps include 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