Patek Philippe caliber CH 28-520 C/522
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| Brand: | Patek Philippe |
|---|---|
| Reference: | CH 28-520 C/522 |
| Base: | Patek Philippe CH 28-520 C |
| Movement: | Automatic |
| Display: | Analog |
| Diameter: | 30.00 |
| Jewels: | 35 |
| Reserve: | 55 |
| Frequency: | 28800 |
| Date: | Date |
| Chronograph: | Chronograph, Column wheel |
| Hands: | Hours, Minutes |
CH 28-520 C/522 description
Flyback chronograph. Central chronograph hand. 60-minute and 12-hour monocounter. Date in an aperture. Diameter: 30 mm. Thickness: 6.63 mm. Number of parts: 327. Bridges: 13. Jewels: 35. Power reserve: min. 45 hours - max. 55 hours. Winding rotor: 21K gold central rotor. Balance: Gyromax®. Frequency: 28,800 semi-oscillations/hour (4 Hz). Balance spring: Spiromax®. Hallmark: Patek Philippe Seal.
