LANG & HEYNE the new model AUGUSTUS I

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The latest creation of the manufacture is dedicated to August I., who called himself Augustus and was passionate about mechanical timepieces.

That makes him the perfect name sake for model "Augustus I". Next to the time, date and year it also shows important anniversaries for the owner and mechanically calculates the respective age. The idea of such a wristwatch-sized calculating machine is based on an invention of the Dutch watch aficionado John Twaalfhoven. Planned as special development and unique piece for the inventor this "new complicated" masterpiece now enriches the collection of LANG & HEYNE.

"Augustus I." being the arithmetic genius under the LANG & HEYNE models is custom-made for every single bearer. Consequently unique pieces in a more than exclusive series are created. Not more than three watches of this extraordinary model are going to be manufactured in the workshops of LANG & HEYNE per year.

Overview of indications:

1: Month & Anniversary
2: Date
3: Minutes & Hours
4: Age (tens)
5: Anniversary or Event
6: Modes
7: Year
8: Age (units)
9: Person or Event

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  • Case crafted from 18 ct rose gold
    • Cathedral hands in blued steel and 18 ct rose gold 
  • Case crafted from platinum
    • Cathedral hands in blued steel and 18 ct rose gold 


  • Crafted from platinum
  • diameter 43,8 mm
  • height 12,5 mm
  • sapphire glass on the top and on the bottom
  • buckle in platinum


  • Massive silver dial with roman numerals
  • Cathedral hands in blued steel and 18 ct rose gold


  • Manual winding movement Caliber VII
  • 46 hours running time
  • a total of 340 items
  • DIAMETER16 ¼ lines (36,6 mm)
  • FREQUENCY18.000 semi-oscillations per hour
  • RUNNING TIME46 hours
  • JEWELS19 rubies, 1 diamond
  • Wheel bridge, balance cock, anchor bridge, runningwheels and escapement manufactured in 18 ct. rose gold
  • Chatons crafted from 18 ct. white gold
  • Floral-shaped wheel bridge
  • Complex calculation- and switch-mechanism mountedon the dial side
  • More than 340 individual parts