====== Martin Braun Astraios ======
{{wst>image_cr|Martin Braun|Astraios SPB}}

{{wst>image_cr|Martin Braun|Astraios SD}}

{{wst>image_cr|Martin Braun|Astraios SRGC}}

**Astraios** is a wristwatch by [[Martin Braun]].

[[Astronomical watch]] with [[automatic]] winding, which is able to indicate the [[sunrise and sunset]] times, as well as the orbit and therefore also the month. To attain a correct display, each watch is individually adjusted to the place specified by the buyer. This watch, as usual with Martin Braun, is delivered in several versions, which distinguish especially through the dial and the housing material.

On the left dial side there is the indicator for the sunrise periods, on the right for the sunset times. Since this is a astronomical display, daylight saving time is not considered.

The mechanism for displaying the orbit requires 86 additional parts compared to the model [[Martin Braun EOS|EOS]]. In the middle of the dial is the gear symbolizing the sun, which makes two full turns per year. On another carrier, there are three thereto coupled gears. To one of them a blue dot is applied that symbolizes the earth. This the central gear encircles counterclockwise once a year in an elliptical orbit and thus is a reflection of the sun orbiting the earth.


<WRAP ud ud_mod>

**Movement: **
  * [[Self-winding]] movement [[MAB 88]]
  * 25 [[jewels]]
  * Hand-engraved, [[rotor]] with [[Geneva stripes]]
  * [[Perlage]]-finished bridges
  * [[Blued]] screws
  * Power reserve 42 h

**Case:**
  * Optional [[stainless steel]] polished, [[rose gold]], [[white gold]] or [[platinum]]
  * Ø 42.0 mm, H 12.5 mm
  * [[Sapphire crystal]]
  * Screwed transparent caseback
  * [[Waterproof]] to 30 m

**Dial:**
  * [[Rose gold]]/silver in two layers, blue/silver in two layers or silver in two layers 

**Functions:**
  * Hours, minutes, date
  * [[Sunrise and sunset]] times
  * Month
  * Display of the [[Astronomical watch|earth's orbit around the sun]]

**Bracelet: **
  * Hand-sewn Alligator leather strap in different colors, [[tang-type buckle]]; optional [[stainless steel]] polished, [[rose gold]] or [[white gold]]
</WRAP>

{{tag>Watch_models Martin_Braun_models Astronomical_watches}}