I agree. Hesalite is just about unbreakable. I have never broken a hesalite crystal in any watch. The acrylic crystal in my wife's Rolex is over twenty years old. And my wife only takes the watch off once ever five years for maintenance. But I have broken saphire in the past. My grandfather wore a Speedmaster. He wore it his whole life. Decades. Used it for everything. Beat the S out of it. It never coughed once. My cousing got that one so I had to buy my own. Again, I own both the Speedmaster and the Seamaster and find that over the long term the Speedmaster will outlast it. For one, a 21,600 bpm movement by its slower nature will stress parts less. No self winding mechanism or rotor to break, and trust me, they do break. The unprotected crown issue is bs. It not only is recessed enough, just as much as on seamaster, but after talking with other people who have worn them for decades as well, they have never been a problem. Go read what NASA subjected these things to. Not even the tanklike Cosmograph survived. The NASA tests are not opinion. They are fact. The Speedmaster Professional is one tough watch. Probably the toughest mechanical watch known to man. I will probably sell my Seamaster since for the last year after buying my Speedy, I don't really want to wear anything else. Besides, where I live, every other Joe has a Seamaster or Submariner. Very few have a Speedmaster. It is always a conversation starter. Now if only my sister would stop borrowing it and get her own.
