Additional information
| Brand: | IWC |
|---|---|
| Family: | Portugieser |
| Reference: | IW5901-07(aka: IW590107) |
| Name: | Portugieser Constant-Force Tourbillon Double Moon Red Gold / Black |
| Produced: | 2017 |
| Limited: | Yes, 1 unit |
Case
| Material: | Red Gold |
|---|---|
| Glass: | Sapphire |
| Back: | Open |
| Shape: | Round |
| Diameter: | 46.00 mm |
| Height: | 13.40 mm |
| W/R: | 30.00 m |
Dial
| Color: | Black |
|---|---|
| Finish: | Sunburst |
| Indexes: | Arabic Numerals |
| Hands: | Feuille |
Description
The IWC Portugieser Constant-Force Tourbillon reference IW5901-07 was made in 2017 as a unique piece. It features a Red Gold case and a Black dial. Inside ticks the hand-wound caliber 94800.
Movement
IWC manufactured 94800 calibre (94000-calibre family) is a hand-wound movement with a tourbillon escapement. A patented constant force mechanism is integrated into the tourbillon, ensuring a stable amplitude of the balance - visible through 1 second jumps of the tourbillon. After having run for 48 hours, the constant force mechanism is decoupled and the tourbillon will move in regular 1/5th of a second intervals. It furthermore features a day/night indication, double moonphase display and a 96 hour power reserve.
| Type: | Handwound |
|---|---|
| Brand: | IWC |
| Caliber: | 94800 |
| Display: | Analog |
| Jewels: | 43 |
| Reserve: | 96 h |
| Frequency: | 18000 bph |
| Time: | Minutes, Hours, Small Seconds |
| Astronomical: | Moonphase |
| Additionals: | Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator |
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