El Primero Stratos Flyback Striking 10th

Find an official retailer
Technical specifications


  • Hours
  • Minutes
  • Seconds
  • Date
  • Flyback Chronograph


  • Self Winding/Automatic
  • Swiss Made


  • Round
  • Stainless steel
  • Brushed & Polished
  • 45.50mm

Water resistance

  • 10.00atm / 100.00m / 330.00ft


  • Deployment Buckle


  • Louisiana Alligator


  • 2011

Official description

“Within the context of the Red Bull Stratos project, I am preparing to take up one of the greatest remaining challenges of our times, meaning freefalling through the stratosphere and breaking through the sound barrier with my own body. Risk management is thus part of my daily life. As far as my instruments are concerned, I must be able to trust them 100%, which is why I turned to Zenith, a House built on tradition, precision and innovations in order to make to measure a watch capable of accompanying me in my feats.”

Pilot for the Red Bull Stratos project, champion skyjumper and basejump record-holder.

Zenith Watches - El Primero Stratos Flyback Striking 10th going to space

Zenith Stratos becomes the first watch to break the speed of sound in a near space environment