Replacement Ceramic Bezel Insert Compatible with Longines HydroConquest 39mm L3.780 Series : Black
Restore your watch with this replacement ceramic bezel insert, designed for watch cases compatible with the Longines HydroConquest 39mm L3.780 series. Crafted from high-quality ceramic, this insert offers excellent scratch resistance, long-lasting color stability, and a refined glossy finish that enhances the professional dive-watch appearance of the HydroConquest.
The insert is constructed to follow the original profile, proportions, and bezel channel seating, allowing it to fit securely and align correctly once installed. Although this is a compatible aftermarket replacement, the scale layout, proportions, and finish are designed to appear extremely close to the original style when worn on the wrist.
(Not an OEM part and not affiliated with Longines — compatible replacement only.)
Product Specifications
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Product Type: Replacement bezel insert
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Material: Ceramic
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Color: Black
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Compatibility: Longines HydroConquest 39mm
L3.780.4.56.6
L3.780.4.96.6 -
Series Fit: L3.780
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Measurements: 36.6 mm (outer diameter) × 29.5 mm (inner diameter)
(manufacturing tolerance ±0.1 mm)
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Construction: Shaped according to original insert contour for proper bezel seating
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Finish: Gloss ceramic surface with clean dive scale