I hate the butterfly clasp; there are no instructions on how to set the day of the week; and the setting for the month and date are impractical for a chronograph.  the last thing is the warning to "NEVER adjust the date when the watch hands are between 9 pm and 3 am!"  Who is going to remember that when the need arises...thanks, but no thanks.  That said, it is a beautiful watch, just too many other concerns.  thanks 