IWC Ingenieur Perpetual Calendar Digital Date-Month – IW381701

18 ct 5N gold case, Automatic, self-winding, Diameter 45.0 mm, Silver-plated dial with luminescence, Black alligator leather strap, Strap width 22.0 mm.

case

• 18 ct 5N gold case
• Diameter 45.0 mm
• Height 17.3 mm
• Screw in crown
• See-through sapphire glass back
• Water resistance 12 bar

Movement

• 89801 Calibre
• IWC-manufactured movement
• Automatic, self-winding
• 68 hours Power Reserve
• Frequency 28800.0 vph (4.0 hz)
• 474 Components
• 51 Jewels
• Côtes de Genève, perlage

Features

• Perpetual calendar with large double-digit displays for date and month and leap year display
• Chronograph function with hours, minutes and seconds
• Hour and minute counters combined in a totalizer at 12 o’clock
• Flyback function
• Sapphire glass, convex, antireflective coating on both sides
• Rotor in 18-carat 5N gold
• Small hacking seconds
• Limited to 100 pieces

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