Steel. Diameter: 41 mm. Thickness: 12.75 mm. Water-resistant to 30m. Sapphire crystal case back.
CH 28-520 HU
Self-winding
Flyback chronograph
Central chronograph hand
30-minute counter
World Time
24-hour and day/night indication for all 24 time zones
Diameter: 34.5 mm. Thickness: 7.97 mm. Number of parts: 343. Number of jewels: 38. Power reserve: min. 50 hours – max. 55 hours. Winding rotor: 21K gold central rotor. Gyromax®. Frequency: 28,800 semi-oscillations/hour (4 Hz). Balance spring: Spiromax®. Distinctive sign: Patek Philippe Seal.
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28 October - 01 November
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