ROYAL OAK PERPETUAL CALENDAR ULTRA-THIN LIMITED EDITION OF 200 Ref. 26586TI.OO.1240TI.01 This new iteration of the ultra-thin Royal Oak Selfwinding Perpetual Calendar model marries a titanium case with a smoked blue dial and a high-flying astrological complication. CASE: Titanium case, glareproofed sapphire crystal and caseback. SIZE: 41 mm THICKNESS: 6.2 mm WATER RESISTANCE: 20 m DIAL: Blue dial, black counters, white gold applied hour-markers and Royal Oak hands with luminescent coating. BRACELET: Titanium bracelet with AP folding clasp.