Portugieser Hand-Wound Tourbillon Day & Night IW545901

18 ct Armor Gold® case, Manual-winding, Diameter 42.4 mm, Black leather strap by Santoni, Strap width 22.0 mm.

CASE

• 18 ct Armor Gold® case
• Diameter 42.4 mm
• Height 10.8 mm
• See-through sapphire glass back
• Water resistance 6.0 bar

MOVEMENT

• 81925 Calibre
• IWC-manufactured movement
• Manual-winding
• 84 hours Power Reserve
• Frequency 28'800 VPH (4 Hz)
• 195 Components
• 22 Jewels

FEATURES

• Flying minute tourbillon
• Day & Night display
• Sapphire glass, convex, antireflective coating on both sides
• Hacking tourbillon mechanism