• Dimension: 41 mm
• Scratch-Resistant Sapphire Crystal, With Several Layers Of Anti-Reflective Coating On Both Sides
• Screw-Down And Transparent With Sapphire Crystal Case Back
• Self-Winding Mechanical Movement Beating at 25'200 Vibrations Per Hour, With A Monocrystalline Silicon Balance-Spring Power Reserve Up To 72 Hours