Jaeger-LeCoultre · Geophysic

Strap for Geophysic True Second Stainless Steel / Silver / Alligator

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

Lug width20 mm
Case diameter40 mm
Reference8018420 (aka: Q8018420)
FamilyGeophysic
MovementJaeger-LeCoultre caliber 770 Hours, Jumping Seconds | Date
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 Geophysic 8018420 (aka: Q8018420)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Geophysic 8018420 (aka: Q8018420), seen from the bench

The Jaeger-LeCoultre Geophysic features the caliber 770 with hours, jumping seconds and date function. The movement has the characteristic seconds hand that advances in discrete steps rather than continuously. The jumping seconds function derives from the tradition of observatory watches used for precision scientific measurements.

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