Chronograph Day Date
Product Details
Although this model accompanies the moon, it still shows the precise time.
Case
| Reference | CH-7543K/SO-2 |
| Case material | Stainless steel |
| Case back | Screw-down case back with satin finish and sapphire crystal |
| Diameter in mm | 42mm |
| Height in mm | 15,45 |
| Finish | Partly polished, partly with satin finish |
| Bezel | Polished screw-down bezel with side knurling and full thread |
Caliber/Movement
| Caliber | Caliber C. 771 S, automatic, skeletonized |
| Frequency | 4 Hz (28.800 A/h) |
| Power reserve in hours | Approx. 46h |
| Number of jewels | 25 |
Dial
| Dial material | Solid sterling silver (925), guilloche |
| Display/s | Central hours and minutes, small seconds, central chronograph seconds, 30-minute counter, 12-hour counter, day/date window at 3:00 |
| Design of hands | Thermally blued, diamond cut and curved; minute hand bent by hand |
| Shape of hands | Breguet Losange |
Strap & buckle
| Strap material | Stainless steel |
| Type of buckle | Folding clasp |
Characteristics
| Water resistance in atm | 3 atm (30m) |
| Special | Guilloche dial |