Watch:
* Caliber 240 LU CL
* Mechanical self-winding movement
* Hours and minutes of mean solar time
* Sky chart, phases and orbit of the Moon
* Time of meridian passage of Sirius and of the moon
* Crown at 2 o'clock: setting of the time and winding
* Crown at 4 o’clock: correction of sky/moon indications
* Sapphire crystal case back
* Water resistant to 30 m
* Case diameter: 43.1 mm
* Yellow Gold
Caliber:
* Hours and minutes of mean solar time
* Sky chart, phases and orbit of the Moon
* Time of meridian passage of Sirius and of the moon
* Overall diameter: 38 mm
* Height: 6.26 mm
* 45 jewels, 12 bridges
* Balance: Gyromax
* Vibrations per hour: 21'600
* Power reserve: 48h max.
* Number of parts: 301
* Patent CH 688171
* Caliber 240 LU CL
* Mechanical self-winding movement
* Hours and minutes of mean solar time
* Sky chart, phases and orbit of the Moon
* Time of meridian passage of Sirius and of the moon
* Crown at 2 o'clock: setting of the time and winding
* Crown at 4 o’clock: correction of sky/moon indications
* Sapphire crystal case back
* Water resistant to 30 m
* Case diameter: 43.1 mm
* Yellow Gold
Caliber:
* Hours and minutes of mean solar time
* Sky chart, phases and orbit of the Moon
* Time of meridian passage of Sirius and of the moon
* Overall diameter: 38 mm
* Height: 6.26 mm
* 45 jewels, 12 bridges
* Balance: Gyromax
* Vibrations per hour: 21'600
* Power reserve: 48h max.
* Number of parts: 301
* Patent CH 688171