Audemars Piguet Royal Oak Black Dial Stainless Steel Mens Watch 15400STOO1220ST01 : New for 2012 is another outstanding example of Audemars Piguet's tribute to the 40th Anniversary of their iconic Royal Oak model The Royal Oak self-winding watch appears in a new more contemporary 41 mm dimension, replacing the current 39 mm size. Bound to leap to the forefront in popularity because of its very recognizable Royal Oak elements It is available in steel and pink gold versions. Its dial has been revisited to accentuate the ?family likeness? that makes each Royal Oak so immediately recognizable. Case: Stainless steel case, glareproofed sapphire crystal and caseback, screw-locked crown Dial: Black dial with ?Grande Tapisserie? pattern, white gold applied hour-markers and Royal Oak hands with luminescent coating Bracelet: Stainless steel bracelet with AP folding clasp Functions: hours, minutes, center seconds, date Automatic Movement - Frequency of balance wheel:3,00 (=21?600 alternances/hour) Direction of automatic winding: Bidirectional Type of oscillating weight: Monobloc in 22K gold Power reserve: 60 hours Date / Date in Dial aperture at 3 o'clock Self-winding Manufacture Caliber 3120 Water-resistant to 50 meters / 165 feet.