The Tonda Métropolitaine Sélène is an elegant and refined creation. If the reference to the lunar phases adds a poetic touch, enticing you to daydream, it is also a feminine interpretation of a great mechanical watchmaking classic. It is both style and substance.
The Calibre PF318 is an automatic-winding mechanical movement. Its two series-coupled barrels ensure 50 hours of autonomous and exceptionally regular operation. Its pendulum beats at a frequency of 28,800 vibrations per hour. Comprised of 205 components, this calibre combines the display of hours, minutes, seconds and the date with the lunar phases. Its moon-phase mechanism is driven by a gear set in motion by the hour wheel, which turns twice as slowly as the former does. Thus, once every 24 hours this gear drives the moon disk by means of a flexible blade integrated into the centre of its wheel.
Hours, minutes, Small second, Date, Moon phase