Hello! I am aiso 27001 certification in qatar professional and I want to learn from you! Please post any articles, tips, or advice related to this field. I am excited to see your comments!

What made the El Primero so special was that it was a fully integrated automatic chronograph link movement as opposed to a chronograph module built atop an existing automatic caliber. Where other brands could surely link claim link a similar accomplishment none could match the hi-beat (and therefore more precise) specs of the Zenith.