Ultimate sapphire

  • Stainless steel case
  • Diameter: 41.00 mm
  • Black fabric strap with light grey stitching
  • Pin buckle or folding clasp

Gravity equal force

The history of watchmaking has seen many solutions developed to address this problem, but none have ever been applied to a watch even remotely close in price to that of the Gravity Equal Force. In keeping with the mission of the System 78 collection to democratize access to haute horology timepieces, the extraordinary value proposition of this watch extends to the exceptional hand-finishing of its movement.

Technical Specifications


  • Stop-Work declutch mechanism and Equal Force Barrel
  • Handmade guilloche pattern on the black movement plate by Kari Voutilainen
  • Bridges are coated with dark grey ruthenium; the barrel and the micro rotor are coated with rhodium


  • Stainless steel
  • Sapphire crystal and case back with anti-reflective treatment
  • Diameter: 41.00 mm
  • Height: 12.65 mm
  • Lug-to-Lug: 48.09 mm
  • Water-resistance: 30 m


  • Grey toned off-center sapphire dial with subdial


  • Steel with hand finishing and Super-LumiNova® filling


  • Delivered with a black fabric strap with light grey stitching
  • Width lugs/buckle: 20/18 mm


  • Pin buckle or Folding clasp available in stainless steel
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