After nearly three years of dedicated research and development, ZF presents a masterpiece born of passion and precision — the Jaeger LeCoultre Geophysic Chronometer model Q1428421, finally unveiled. This long-awaited timepiece delivers exceptional craftsmanship and solves the longstanding challenge of case thickness.
【Exquisite Details】 Measuring 39mm x 11.9mm, the watch perfectly matches the original in dimensions. Leveraging extensive experience in replicating Jaeger LeCoultre designs, ZF has flawlessly captured the case’s character and intricate details, achieving identical thinness to the authentic version. The lugs flow naturally from the case, which is meticulously polished. Both front and back sapphire crystals offer outstanding clarity and integrate seamlessly with the case.
【Technical Breakthrough】 Powered by a modified Japanese MIYOTA 9110 movement transformed into the Jaeger CAL.939A/1, this watch achieves full functionality of the original — including hours, minutes, seconds, date display, day/night indication, world time function, and power reserve indicator. Exceptionally reliable, it boasts an extremely low return rate.
This powerful and sophisticated movement makes it the most feature-complete and best-crafted replica timepiece available today — unmatched in performance and quality.
【Strap & Clasp】 Features a black Italian calf leather strap with hand-stitched crocodile-textured embossing, paired with Jaeger’s classic folding clasp (fully interchangeable with genuine parts).
Experience perfect texture and ultimate refinement.
ZF’s heartfelt masterpiece — a must-see for all watch enthusiasts.






























