It is well known that Breitling's Chronomat is getting an overhaul this year with their brand new Caliber B01 self-winding movement that's designed 100% in-house. Breitling has their own in-house movement,just like other watch maker.The Chronomat B01 also features a new longer profile for a better fit on your wrist and water resistance up to 1,650 ft/50 Bar.So it can be worn for longer time.Until now , it has attracted many fashion people all over the world due to many advantages.I have to say that Wearing it is really fashionable and cool.