====== Martin Braun Heliozentric ======
{{wst>image_cr|Martin Braun|Heliozentric S RG}}

{{wst>image_cr|Martin Braun|Heliozentric PB}}

{{wst>image_cr|Martin Braun|Heliozentric B P}}

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

[[Astronomical watch]] with [[automatic]] winding, which can display the orbit, the month and the twelve zodiac signs. This watch is available, as usual with Martin Braun, in several versions that differ primarily through the dial and the [[bezel]].

The mechanism for this astronomical [[complication]] requires 71 additional parts. 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 which symbolizes the earth. This encircles the central gear once a year counterclockwise in an elliptical orbit and 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
  * Model with blue-silver dial, with [[bezel]] set with 66 [[diamonds]], in total 2.31 carat

**Functions:**
  * Hours, minutes, date
  * Months
  * Display of the earth's orbit around the sun
  * Display of the twelve zodiac signs

**Dial:**
  * Black-silver in two layers, blue-silver in two layers or silver in two layers

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

{{tag>Watch_models Martin_Braun_models Astronomical_watches}}