It does exists: a wrist watch with mechanical altimeter (Breva Génie 02 Terre)

There is something you don't see every day - a mechanical wrist watch with a working altimeter! Produced by Breva, the Génie 02 Terre is a titanium made (G5) timepiece with a fully functional, high-performance mechanical altimeter. Only 55 pieces will be produced (available with meter or feet calibrations) and the price will be $132,000. Breva Génie 02 Terre technical specifications:

  • Functions: hours, minutes, small seconds, large-scale altitude indicator, precision-scale altitude indicator, power reserve indicator, air pressure valve, equalizer seal indicator, altitude scale adjuster.
  • Case, dial and strap:
  • Case material: titanium G5, with altitude calibrated in either meters or feet.
  • Dimensions: 44.7 mm x 15.6 mm
  • Number of components: 69
  • Crowns: winding setting crown at 9 o'clock, altitude adjuster at 2 o'clock, air valve at 4 o'clock
  • Crystals: sapphire crystal and display back treated with anti-reflective coating on both sides.
  • Dials: Grained and galvanically-treated Nickel silver, indexes and numbers in three-dimensional Super-LumiNova
  • Altitude scales: available in metric (meters) or imperial (feet) measurements
  • Water resistance: 30m
  • Air valve with Teflon moisture-resisting osmosis membrane
  • Strap and buckle: natural rubber strap with titanium tang buckle.
  • Movement:
  • Proprietary movement developed exclusively for Breva by Jean-François Mojon/Chronode
  • Diameter: 36mm
  • Number of components: 415
  • Number of jewels: 45
  • Balance frequency: 3 Hz
  • Dual aneroid capsules specifically developed to derive altitude from air pressure
  • Power reserve: 65 hours
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