ROYAL OAK SELFWINDING CHRONOGRAPH, 41 mm
Ref 26331ST.OO.1220ST.02
CASEStainless steel case, glareproofed sapphire crystal, screw-locked crown.
CASE SIZE41 mm
WATER RESISTANCE50 m
CASE THICKNESS11 mm
DIALBlack dial with “Grande Tapisserie” pattern, silver-toned counters, white gold applied hour-markers and Royal Oak hands with luminescent coating
BRACELETStainless steel bracelet with AP folding clasp.
TOTAL DIAMETER26.2 mm (11½ Lignes)
FREQUENCY OF BALANCE WHEEL3.00 Hz (21,600 vph)
TYPE OF OSCILLATING WEIGHTMonobloc in 18-carat gold
NUMBER OF JEWELS37
CALIBRESelfwinding Calibre 2385
TYPE OF BALANCE-SPRING STUD-HOLDERMobile stud
POWER RESERVE40 hours
BALANCE-SPRING TYPEAnnular
DIRECTION OF AUTOMATIC WINDINGUnidirectional (see recommendations underneath)
NUMBER OF PARTS304
FUNCTIONSChronograph, hours, minutes, small seconds and date.
