Jaeger-LeCoultre · Polaris

Strap for Polaris Mariner Memovox Stainless Steel / Blue / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
ReferenceQ903818J (aka: 903818J)
FamilyPolaris
MovementJaeger-LeCoultre caliber 956AA hours, minutes, seconds | date | alarm
Year2022
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 Polaris Q903818J (aka: 903818J)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Polaris Q903818J (aka: 903818J), seen from the bench

The Jaeger-LeCoultre Polaris Q903818J is a 42mm stainless steel sports watch with a 20mm lug width, directly descended from the 1968 Memovox Polaris. It features the in-house JLC 956AA calibre with hours, minutes, seconds, date, and a mechanical alarm complication. The steel case combines satin-finished sides with polished bezels, balancing instrumental functionality with refined aesthetics suitable for daily wear.

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