Round
sapphire crystal
See-through Sapphire cyrstal
18K 5N red gold
18K 5N red gold
43.35 mm
30 m
15.70 mm
Skeleton
Blue stainless steel
5 days
hand wound
13BM12AIQPR
Hours, minutes, sub-seconds (patented coaxial seconds), day, retrograde date, month, leap year, power reserve indicator, reversed hand-fitting (hours, minutes and seconds)
alligator
Dark Blue
18K 5N red gold ardillon