2012/02/29 - Urban Jürgensen & Sonner Chronometer P8 Automatic

Urban Jürgensen has been manufacturing chronometers without interruption since 1773. In 2003, the company began working on an exceptional proprietary movement that would form a bridge between the high-precision instruments of the day and contemporary mechanical watchmaking. This research would come to fruition, thanks to the contributions of master watchmaker Kari Voutilainen and movement designer Jean-François Mojon, following the demise of Peter Baumberger in 2010. Unveiled last year, the P8 calibre with detent escapement and COSC certification is 40% more precise than the average, and will accommodate an exceptional diversity of complications. Indeed, the Chronomètre P8 Automatique is the first in a large family of watches to incorporate complications into this P8 calibre.

Technical specifications

  • Automatic, UJS.P8-Ref11-CA calibre, twin barrels and pivoted detent escapement, specific barrel bridge incorporating the automatic winding module, 18K gold oscillating weight, 88-hour power reserve 
  • Hours, minutes, seconds and power-reserve indicator 
  • Platinum or 18K red gold, 42 mm 
  • Sapphire crystal front and back 
  • Solid silver with hand-guilloché motif Breguet numerals 
  • Small seconds at 6 o'clock 
  • Power-reserve indicator at 12 o'clock 
  • Black leather with 18K red gold or platinum buckle