Central seconds hand with stopwatch, IWC quick-change system for strap or bracelet. Sapphire, domed, anti-reflective on both sides

• Stainless steel case

• Diameter 34.0 mm
• Height 8.6 mm
• Water tightness 3.0 bar
• 35100 Caliber
• Automatic, self-winding
• 50 power reserve in hours
• Frequency 28’800 VPH (4 Hz)
• 25 Rubies