Reactor Watch

Critical Mass Chrono Watch

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Reactor's top selling style, Critical Mass offers classic good looks that dress up well but still play hard. If you could have only one watch, a Critical Mass is hard to beat, as it performs flawlessly in the office or in the ocean.

Product Details


  • Reactor DNA 
  • Forged from solid 316L stainless 
  • Unidirectional rotating timing bezel 
  • Durable, accurate quartz movement 
  • 200M/660Ft depth tested


  • Case diameter: 40mm 
  • Thickness: 13.2mm 
  • Weight: 198 grams 
  • Width at lug: 29.2mm 
  • Width at clasp: 22mm