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Ref. No. 5448-01
Code 1578
Movement Manual winding
Case Material Steel
Bracelet Material Crocodile skin
Condition 0 (unworn)
  New
  With Box
  With Papers
Location United States, Illinois, Northfield
Caliber
Movement Manual winding
Movement/Caliber 98800
Power Reserve (h) 46 h
No. of Jewels 18
Case
Case Material Steel
Case Diameter 46 mm
Thickness 11 mm
Waterproof 30 m
Glass Sapphire Glass
Dial numerals Roman numerals
Bracelet
Bracelet Material Crocodile skin
Clasp Buckle
Buckle Material Steel
Functions
Moonphase
Others
Small Seconds
Comments
Mechanical movement with manual winding, IWC In-House designed caliber 98800, 18 jewels, 18,000 vph, Power reserve is approximately 46 Hours. Large high polished stainless steel case, Diameter of the case is 46 mm (excluding winding crown and vintage-styled lugs), height is 11 mm, Pull-in crown, Domed anti-scratch sapphire crystal, See-through screw-in case back showcasing beautiful works and elaborate finish of the mechanical movement, water-resistant up to 30 m / 3 atm. Black vibrant, slightly curved on the edges (typical design in the vintage models) dial with silk-screened printed Roman numerals, printed minute track on the outer part of the dial, Breguet-style polished steel hands, Small seconds counter at 6:00 o'clock position. Large Moon Phase aperture at 12:00 o'clock position. The Moonphase function in this watch is very accurate with a deviation rate of only 1 day for every 122 years. It's being set and adjusted through the winding crown rather than through recessed button on the case sides of watches with this functionality, which also eliminates use of the stylus. Genuine black crocodile leather matte hand-stitched strap with high-polished stainless steel vintage-styled post buckle.
IWC Vintage Portofino