I'm not sure what the font sizes are of these watches but I would assume less than 8 point font - which is difficult for any reader. May be one of the reasons we have big dates, big numerals, and big hands on some of the newer models. And the iPhone always serves as the best and most accurate Perpetual Calendar.
In any case, there is an extraordinary finesse to this timepiece that is special 
Cheers and happy holidays!
Peter