Housed in a 41 mm case crafted from 18-carat white gold, the Royal Oak 26574BC.OO.1220BC.02 was developed alongside musician John Mayer and carries his name as its unofficial nickname. The case is secured by an AP folding clasp on an 18-carat white gold bracelet and offers 20 m of water resistance.
The blue "Crystal Sky" finished dial is appointed with white gold applied hour-markers and Royal Oak hands featuring a luminescent coating. Beneath it, the selfwinding movement measures 29 mm in diameter and 4.5 mm in thickness, running at 19,800 vph (2.75 Hz) with a 40-hour power reserve, 38 jewels, and 374 individual components.
The calibre delivers a perpetual calendar displaying week indication, day, date, astronomical moon, month, and leap year alongside hours and minutes — a full accounting of time rendered without need for manual correction through the end of every month.
