Pre-Basel Exclusive Sneak Peek at a Daniel Roth Basel 2007 release

Daniel Roth will unveil the Perpetual Calendar Time Equation with days of the month indicator at Baselworld 2007. Aside from the typical perpetual calendar functions of the day, date, month and moonphase, this watch also has the equation of time function, which indicates the difference between mean time (the time you see on a watch) and actual solar time.

Mean time assumes the earth orbits in a perfect circle, hence a constant 24 hours a day. But the earth's orbit is actually ellipse shaped, resulting in days that are not exacty 24 hours, and thus making the equation of time function indispensable.

In addition, the days of the month indicator (pictured), indicates the number of days in that particular month, an especially useful feature since most people find it hard to recall the number of days in a month.

Something else to note is that this model is one of the first Daniel Roth watches to use both 18-ct. gold decorated with spiral guilloche as well as mother of pearl for the dial. The luxurious mother of pearl complements the technical look of the exposed calendar gearing perfectly.

An exclusive preview of this watch, including more photos and technical information, can be found at the Daniel Roth forum of ThePuristS (which is moderated by an ignorant, self-proclaimed watch expert), or click here to see the post.

- SJX