A watch’s case is both its adornment and its armour. Its weight, texture, colour, aesthetics and physical language are determined by the material from which it is made.
The first complication adopted by the Royal Oak was the calendar. Between 1983 and 1984, the famous octagonal watch was successively enriched with Day-Date, moon phase and perpetual calendar functions.
Introduced in 1987, most often with dials without the Tapisserie motif, the Royal Oak 25654 perpetuates the aesthetics of Model 5554 (1984), but improves its water-resistance by revisiting the construction of the case, which is slightly thicker, increasing from 7.5 mm to 8.3 mm.
