Panerai · Radiomir

Strap for Radiomir Titanium

Takes 26 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width26 mm
Case diameter47 mm
ReferencePAM00309 (aka: PAM309, PAM 309)
FamilyRadiomir
MovementPanerai caliber OP XXVII Hours, Minutes, Small Seconds
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 Radiomir PAM00309 (aka: PAM309, PAM 309)

Selected for the 26 mm lug width · workshop selection

All 26 mm straps →

The Radiomir PAM00309 (aka: PAM309, PAM 309), seen from the bench

The Panerai Radiomir PAM00309 is a 47mm titanium dive watch tracing its lineage to 1930s Italian Navy chronographs. It features the caliber OP XXVII manual movement with hours, minutes and small seconds. The 26mm strap width is determined by the cushion case proportions and vertical development, requiring precise measurement for correct fit. Titanium construction provides corrosion resistance and reduced weight compared to steel.

Frequently asked questions

What is the lug width of the Panerai Radiomir PAM00309 (aka PAM309, PAM 309)?

The Panerai Radiomir PAM00309 features a lug width of exactly 26mm. This measurement is specific to this model and is determined by the proportion between the 47mm case diameter and the geometry of the cushion case. Correct measurement means verifying the distance between the internal lug seats with a digital caliper, excluding lateral protrusions. Do not confuse with other Panerai models that may feature 24mm or 26mm with variants.

What is the best strap for the Panerai Radiomir PAM00309?

Mississippi alligator remains the most coherent choice with the identity of the PAM309: the compact grain and regular texture do not visually compete with the squared geometry of the cushion case. An alligator in tobacco or chocolate brown tones develops a natural patina over time that emphasizes the aesthetic sobriety of the Radiomir. For more informal contexts or historical fidelity, an 18oz canvas NATO in slate grey echoes the authentic military lineage. Badalassi Carlo calf leather offers an elegant compromise with the ability to develop noble creases over time.

How do you change the strap on the Panerai Radiomir PAM00309?

The PAM00309 uses a standard straight lug configuration. Removing the strap means using a spring bar tool to compress the spring bar inside the upper and lower lugs, then slide the old strap out. For inserting the new strap, insert the elastic spring bar into the lug, align it with the upper case hole, compress slightly and slide downward until the spring bar seats in the groove. Verify visual alignment of the strap on the case before proceeding with the lower lug. The operation requires patience and appropriate tools: Casati Milano offers strap change service by appointment.

Which aftermarket straps are compatible with the Panerai Radiomir PAM00309?

Any strap with a 26mm lug width is compatible with the PAM00309, provided that the width is measured correctly (26mm between internal lug seats). Compatibility variables include: the type of spring bar (standard elastic, fixed pin, or proprietary system), the thickness of the strap at the attachment point (must pass through the lug without impedance), and total length (verify that the strap reaches the second or third adjustment hole with the buckle fully open). Custom straps from Milano Straps are customizable in length and allow dynamic lug width adjustment within minimal tolerances.

How long does a leather strap last on the Panerai Radiomir PAM00309?

The lifespan of a leather strap for the PAM00309 depends on the leather type, usage and maintenance. Quality alligator, with regular care (cleaning with damp cloth, air drying, hydration every 6-8 months), maintains structural integrity for 4-6 years of moderate daily use. Vegetable-tanned calf, given contact with skin moisture, lasts 3-5 years before presenting surface creases (noble in this case). A canvas NATO strap lasts longer, 6-8 years, but requires occasional washing. Casati Milano guarantees its own straps for 18 months and recommends preventive maintenance after the second year of intensive use.

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