Royal Oak Perpetual Calendar Yellow Gold 26574BA Black Dial

Size: 41mm x 11.5mm
Movement: Modified 21J automatic movement at 21600vph with platinum plated rotor
Functions: Hours, minutes, month, moonphase, day and date display
Case: 18K yellow gold plated solid 316L stainless steel case
Crystal: Scratch-proof sapphire crystal with colorless anti-reflection coating
Dial: Black textured dial with custom moonphase indicator
Bezel: Brushed/polished stainless steel bezel
Strap: 18K yellow gold plated stainless steel bracelet
Clasp: Double deployant buckle
Water resistance: <20 Meters