Zephyros is a wristwatch by Martin Braun.

Astronomical watch with automatic winding which can indicate the equation of time, as well as the seasons. This watch can be obtained, as usual with Martin Braun, in several versions that differ primarily by the dial.

The equation of time indication enables the display of the difference from the mean local time to true local time, which is mainly of great importance in navigation.

As additional design element the watches have a symbolic sextant on the dial.