- Who
- Andreas Strehler
- What
- 1 day in 2,060,757 years day(s):hour(s):minute(s):second(s)
- Where
- Switzerland (Sirnach)
- When
The most precise lunar phase wristwatch is the "Sauterelle à lune perpétuelle" by Andreas Strehler (Switzerland), with a deviation of 1 day in 2,060,757 years, as validated in November 2014.
The display is based on a mean moon cycle of 29 day, 12 hours, 44 minutes and 2.8 seconds.
