Sauterelle à lune perpétuelle

The Sauterelle à lune perpétuelle is the most precise phase of the moon indication ever built in a wristwatch. It made it into the Guinness Book of Records. It is also the most precise phase of the moon by some margin: Approximately 2.045 million years.

The runner-up, by the way, is Andreas Strehler’s predecessor Sauterelle à lune perpétuelle with its precision of 14’189 years. Technically, the Sauterelle à Lune perpétuelle 2M is based on the Sauterellewhich Andreas Strehler presented last year. Like the Sauterelle, the 2M has Andreas Strehler’s unique remontoir d’égalité. This provides a constant supply of energy to the escapement.


The Sauterelle à Lune Perpetuelle was the first moonphase movement created by Andreas Strehler. The first version of it was already an astonishing precise moonphase with one day deviation every 14’000 years.

In the press: World Tempus, Quill & Pad

Movement Mechanical, manual winding
Complication Remontoir d’égalité, world most precise Moon Phase (2 million years for 1 day variation)
Power reserve 78 hours, double barrel mainspring
Movement size Tonneau shape: 32x30mm, 5.9mm thickness
Frequency 3Hz / 21’600 A/h
Jewels 25
Movement parts 162
Case 18K rose gold or platinum
Case size 41×47.2mm, 10mm height
Hands Blue steel or gold
Dial In silver and sapphire
Strap Black alligator with tang buckle in 18K rose gold or platinum
Price CHF 113’000 (excl. VAT and local taxes)
Calibre Specification HERE