About This Watch
The Jaeger-LeCoultre Master Ultra Thin Moon is widely regarded as one of the most beautiful moon phase watches available at any price. The blue enamel dial creates a mesmerizing depth that photographs cannot fully capture — it shifts from rich navy to deep royal blue depending on the light, providing the perfect nocturnal backdrop for the moon phase display. The complication is rendered with extraordinary precision, requiring correction only once every 122 years and 46 days. The caliber 925/1 maintains the ultra-thin ethos despite incorporating the moon phase mechanism, keeping the case thickness under 10mm. At 39mm in stainless steel, this is a watch that punches dramatically above its price point in terms of dial finishing, movement decoration, and complication execution. The date display at six o'clock and the moon phase aperture are perfectly balanced on the dial, creating visual harmony. JLC's mastery of enamel dials — a technique practiced at the Manufacture since the 19th century — is fully evident here. This watch routinely appears on 'best of' lists and has converted many collectors who never previously considered JLC. It stands as proof that the Grande Maison can create objects of desire that compete with any brand in the Swiss watch industry.
Specifications
Movement
| Movement Type | Automatic |
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| Caliber | Jaeger-LeCoultre 925/1 |
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| Power Reserve | 38 hours |
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| Frequency | 28,800 vph |
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| Jewels | 28 |
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Case
| Case Diameter | 39.0mm |
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| Case Thickness | 9.9mm |
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| Case Material | Stainless Steel |
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| Crystal | Sapphire with anti-reflective coating |
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| Bezel | Fixed, polished |
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| Dial Color | Blue |
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| Lug Width | 20mm |
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| Lug-to-Lug | 46.0mm |
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Features
| Water Resistance | 50m / 164ft |
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| Bracelet/Strap | Blue alligator leather strap |
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| Clasp | Deployant clasp |
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| Weight | 57g |
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| Complications | Moon PhaseDate |
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