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Chronograph
Selfwinding chronograph with date display and small seconds at 6 o'clock. Stainless steel case, blue dial, stainless steel bracelet.
Explore Royal Oak
Royal Oak To break the rules, you must first master them. 
Limited Edition Royal Oak Leo Messi 
Royal Oak Eight new models to celebrate the 40th anniversary Details
- Case Width 41.00 mm
- Case Thickness 10.00 mm
- Water Resistance 50 m
Specifications
- Case
- Glareproofed sapphire crystal, screw-locked crown, water-resistant to 50 m
- Dial
- "Grande Tapisserie" pattern, white gold applied hour-markers and Royal Oak hands with luminescent coating
- Bracelet
- Stainless steel with AP folding clasp
- Reference
- 26320ST.OO.1220ST.03
- Functions
- Chronograph, hours, minutes, small seconds, date
- Total diameter
- 26.2 mm
- Total diameter
- 11½ lines
- Type of balance
- Annular
- Frequency of balance wheel
- 3,00 (=21'600 alternances/hour) Hz
- Type of balance-spring stud-holder
- Mobile stud
- Balance-spring type
- Flat
- Direction of automatic winding
- Unidirectional (see recommendations underneath)
- Type of oscillating weight
- Monobloc in 18-carat gold
- Number of jewels
- 37
- Power reserve
- 40 h
- Number of parts
- 304
specificities
- Integrated Chronograph movement
- Column wheel Chronograph mechanism
- Date / Date in Dial aperture
- Chronographe / Hour counter / Minutes counter / Seconds counter
Expert Service
As an Audemars Piguet owner, you’ll have access to the world’s brightest master horologers – many trained here in the Vallée de Joux.
ServiceVisit a Boutique
You can indulge your fascination with our timepieces at retail locations and at our exclusive boutiques, all over the world.
Where to buy
Audemars Piguet History
Chronographs have long been a specialty of the watchmakers of the Vallée de Joux.
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Royal Oak SELFWINDING
Selfwinding watch with date display and centre seconds.
