The Basics

reference 5447 The flying minute tourbillon at “9 o’clock” attracts curious glances. Gracing the dial on the opposite side, at “3 o’clock”, is the flowing signature of company founder F.A. Jones. The IWC-manufactured 98900 calibre belongs in the tradition of the 98 calibre, which was first designed in the 1930s and has since been continuously improved.

Brand: IWC
Family: Portugieser
Reference: IW5447-05 (aka: 5447-05, IW544705)
Name: Portugieser Tourbillon Hand-Wound F.A. Jones
Produced: 2010 – 2011
Limited: Yes, 500 units

Below is a detailed look at IWC’s model IW5447-05 from Portugieser watch family, including the price, case details and movement features.

IWC Portugieser IW5447-05

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The Details

IWC’s Portugieser Tourbillon Hand-Wound F.A. Jones (IW5447-05 (aka: 5447-05, IW544705)) was originally released in 2010 – 2011. This watch features a hand-wound movement beating at a frequency of 28800 bph ( 4 Hz) to provide a 54-hour power reserve when fully wound.

The Case

The case measures 43.1mm in diameter and roughly 11mm thick. The round case is paired with a silver color dial with feuille-shaped hands, and a arabic numerals hour markers and minute track, covered by a sapphire glass. IWC’s Portugieser model IW5447-05 is water resistant up to 30 meters (98 ft). A display caseback is over the back of the watch case.

Glass: Sapphire
Back: Display
Shape: Round
Diameter: 43.1mm
Height: 11mm
Lug Width: N/Amm
W/R: 30

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Portugieser IW5447-05 movement is a powered by caliber 98900 made by IWC. The 21-jewel hand-wound movement is 37.8mm in diameter. Its balance wheel oscillates at 28,800 semi-oscillations per hour or 4 Hz. This movement offers a 54-hour power reserve.

Type: Hand-Wound
Brand: IWC
Caliber: 98900
Base: N/A
Display: Analog
Diameter: 37.8mm
Jewels: 21
Reserve: 54 hours
Frequency: 28800 bph
Time: Hours, Minutes, Small Seconds
Additionals: Tourbillon Escapement

The Price

How much does the IWC’s Portugieser IW5447-05 cost? This watch was introduced in 2010 and has been in IWC’s collection for around . This watch is a limited edition with just 500 pieces released. As with most luxury watches, the price of depends on the availability and demand.


For more information, visit IWC online.


  • Brand: IWC
  • Model: Portugieser Tourbillon Hand-Wound F.A. Jones
  • Reference Number: IW5447-05 (aka: 5447-05, IW544705)
  • Limited: Yes, 500 units

Case & Dial:

  • Material:
  • Glass: Sapphire
  • Back: Display
  • Diameter: 43.1
  • Thickness: 11
  • Lug Width: N/A
  • Dial Color: Silver
  • Indexes: Arabic Numerals and Feuille-shaped hands
  • Water Resistance: 30 meters


  • Winding: Hand-Wound
  • Brand: IWC
  • Caliber: 98900
  • Display: Analog
  • Diameter: 37.8mm
  • Jewels: 21
  • Power Reserve: 54 hours
  • Frequency: 28800 bph
  • Functions: Hours, Minutes, Small Seconds

About IWC

IWC logo

IWC is based in Schaffhausen, Switzerland, and was founded in 1868. Its signature lines are the Pilot’s Watches and the Portugieser, while other famous collections are the Aquatimer, Portofino and the Da Vinci. Many of IWC’s designs display a industrial type of beauty not often found in Swiss watchmaking. The same goes for its movements; while of very high standards, they are finished with an … engineers touch rather than that of an artist. One could very well say that IWC’s approach to watchmaking is more German in nature compared to many of its competitors; the ‘form follows function’ adagio is one held in high esteem in Schaffhausen. Notable watches and innovations created by IWC in the past include the digital ‘Pallweber’ pocket watch, the late 1930’s Portugieser, the 1985 Da Vinci with Kurt Klaus perpetual module, the split-seconds mechanism as designed by Richard Habring and the ceramic Da Vinci and Flieger 3705 – introduced many years before the material became fashionable. IWC also pioneered the use of titanium in wristwatches. In recent years, IWC has had a strong focus on in-house movements with prices rising accordingly. IWC is part of the Richemont group.

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