Brand Frederique Constant Caliber Number FC-220 In-House? No Base Caliber Ronda 515, Ronda 505, Ronda 1016 (see below…) Movement Type...
Manufacturer Sea-Gull Caliber Number ST1780, ST-1780, TY2714 Movement Type Automatic, self-winding mechanical Diameter Unconfirmed Height 6.26mm Jewel Count 28 jewels...
Manufacturer Grand Seiko Caliber Number 9RB2, 9RB2A Movement Type Spring Drive, hybrid automatic Diameter 30mm Height 5.02mm Jewel Count 34...
Manufacturer Rolex Year Introduced 2025 Calibers Rolex 7135 Known Materials Nickel phosphorus alloy, ceramic (balance staff) Known Models Rolex Land-Dweller...
Manufacturer Rolex Caliber Number 7135 Base Caliber Rolex 7140 In-House? Yes Movement Type Automatic, self-winding mechanical Chronometer Spec? Yes (Superlative...
Nivarox is the name of a metal alloy used to make hairsprings (aka balance springs) for watches. Development of Nivarox...
Brand Breitling Caliber Number B31 Movement Type Automatic, self-winding mechanical Chronometer Spec? Yes (COSC) Diameter 28.4mm Height 4.8mm Jewel Count...
Brand Cartier Caliber Number 78-1, 78/1 In-House? No Base Caliber ETA 2512-1 Movement Type Mechanical, manual-wind Lignes 7.75”’ Overall Diameter...
Manufacturer Seiko Caliber Number A904, A904A, A 904 Movement Type Digital, quartz Diameter 27.4mm Height 4.8mm Jewel Count No jewels...
Brand Tissot Caliber Number 744 Base Caliber ETA 2551 Movement Type Automatic, self-winding mechanical Lignes 7.75”’ Overall Diameter 17.5mm Casing...
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