IWC Schaffhausen Portofino Hand-Wound Monopusher

IWC Schaffhausen enhances its popular Portofino collection with a brand new mono-pusher chronograph featuring a hand wound movement developed in house.

The Portofino Hand-Wound Monopusher (Ref. IW515103/IW515104) sets itself apart with an ingenious single push-button stopwatch that measures time for up to 60 minutes.

The chronograph push-button is integrated in the crown and at glance is virtually invisible. Repeatedly pressing the single, multifunctional push-button starts, stops and resets the chronograph. When the button is pushed for the third time, all the chronograph displays return to zero.

IWC Schaffhausen Portofino Hand-Wound Monopusher

The newly developed movement in the Hand Wound Monopusher is a worthy addition to IWC’s in-house Movements and the range.

IWC 59360 calibre

The 59360 calibre is an offshoot of the high-performing 59000-movement family with the outstanding feature of a chronograph mechanism built into the movements. The owner can look forward to a 192-hour movement, which, when fully wound, will run accurately for eight whole days before automatically stopping.

IWC Schaffhausen Portofino Hand-Wound Monopusher Ref.  IW515104

The amount of energy remaining is displayed on the power reserve display on the dial between “8 o’clock” and “9o’clock”. The subdial at“12o’clock”displaysthenumberof minutes recorded by the chronograph while the seconds can be read off on the central hand. Together with the small-seconds subdial at “6o’clock” and the date display at “3 o’clock” it results in a well-proportioned dial design.

IWC Schaffhausen Portofino Hand-Wound Monopusher Ref.  IW515103

The sapphire-glass back exposes an IWC-manufactured movement decorated with Geneva stripes together with the chronograph mechanism.

IWC Schaffhausen Portofino Hand-Wound Monopusher Ref.  IW515103

The Portofino Hand Wound Monopusher is available either in white gold with a slate-coloured dial and grey Santoni alligator leather strap or in an 18-carat red gold version with an attractive silver-plated dial and brown Santoni alligator leather strap.

Technical details

Model: IWC Portofino Hand-Wound Monopusher (REF. IW515103 ∙ IW515104)

IWC-manufactured­ calibre­ 59360 Mechanical single-pusher chronograph movement
Winding: Hand-wound
Frequency: 28,800 A/h | 4 Hz
Jewels: 36
Power reserve: 8-day power reserve when fully wound
Indexless balance with 4 gold weight screws on the balance rim
Breguet spring

Stopwatch function with minutes and seconds
Small hacking seconds
Date display
Power reserve display

Case, dial and strap

  • Ref.  IW515103: Case in 18-carat white gold, slate-coloured dial, Santoni strap made of grey alligator leather, pin buckle in 18-carat white gold
  • Ref.  IW515104: Case in 18-carat red gold, silver-plated dial, Santoni strap made of brown alligator leather, pin buckle in 18-carat red gold

Glass: Sapphire, arched edge, anti-reflective coating on both sides
See-through sapphire-glass back
Water-resistant: 3 bar
Diameter: 45 mm
Height: 13 mm

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