Audemars Piguet Royal Oak Offshore Diver 15720ST.OO.A052CA.01.

1. Case

Material: Stainless steel
Diameter: 42mm
Thickness: 14.1mm
Shape: Octagonal bezel with eight hexagonal white gold screws
Finish: Alternating polished and satin-brushed finishes
Crown: Screw-down stainless steel crown with integrated guards
Caseback: Exhibition caseback with sapphire crystal, screw-fastened
Water Resistance: 300 meters (1,000 feet)
2. Bezel
Type: Unidirectional rotating bezel for diving
Material: Stainless steel
Markers: 60-minute diving scale with luminous marker at the 12 o’clock position
Functionality: Rotates counterclockwise to measure elapsed time
3. Dial
Color: Khaki green
Pattern: ‘M??ga Tapisserie’ (large guilloch?? texture)
Hour Markers: White gold applied markers with luminescent coating
Hands: White gold Royal Oak hands with luminescent coating for visibility in low-light conditions
Date Window: At the 3 o’clock position, with a magnified display on the dial side
4. Crystal
Material: Sapphire crystal
Coating: Anti-reflective treatment on both sides
Scratch Resistance: High resistance to scratches and damage
5. Movement
Caliber: Audemars Piguet Caliber 4308
Type: Self-winding mechanical movement (Automatic)
Frequency: 28,800 vibrations per hour (4 Hz)
Power Reserve: 60 hours
Number of Jewels: 32
Components: 234 parts
Functions:
Hours
Minutes
Central seconds
Date (quick-set feature)
Rotor: Skeletonized rotor with Audemars Piguet logo, visible through the exhibition caseback
Decoration: Bridges with C??tes de Gen??ve finishing, rhodium-plated parts, and hand-finished details
6. Strap
Material: Khaki green rubber
Width: Standard lug width (26mm)
Buckle: Stainless steel pin buckle
Features: Durable, flexible, and resistant to environmental wear (ideal for diving and outdoor conditions)
7. Diving Features
Water Resistance: 300 meters (ISO 6425 certified for professional diving)
Diving Bezel: Unidirectional rotating bezel to prevent accidental resetting during diving
Screw-Down Crown: Ensures watertight sealing
Anti-Magnetic Protection: Movement is shielded from magnetic interference for precision
8. Additional Features
Luminescence: Luminous hour markers and hands for enhanced legibility in low-light environments
Sapphire Caseback: Display caseback showcasing the movement
Anti-Reflective Coating: Reduces glare under bright light or underwater conditions
Summary of Key Parameters:
Case Material: Stainless steel
Case Diameter: 42mm
Thickness: 14.1mm
Dial: Khaki green “M??ga Tapisserie”
Water Resistance: 300 meters (1,000 feet)
Movement: Audemars Piguet Caliber 4308 (self-winding)
Power Reserve: 60 hours
Strap: Khaki green rubber strap with stainless steel pin buckle
Bezel: Unidirectional rotating bezel (diving scale)

Frequently Asked Questions