Additional information
| Brand: | IWC |
|---|---|
| Family: | Portofino |
| Reference: | IW3731-05(aka: IW373105) |
| Name: | Portofino Chronograph MecaQuartz Stainless Steel / White / Calf |
| Produced: | 1988 - 1998 |
| Limited: | No |
Case
| Material: | Yellow gold |
|---|---|
| Glass: | Sapphire |
| Back: | Closed |
| Shape: | Round |
| Diameter: | 35.00 mm |
| Height: | 7.80 mm |
| Lug Width: | 18.00 mm |
| W/R: | 30.00 m |
Dial
| Color: | White |
|---|---|
| Indexes: | Stick / Dot |
| Hands: | Stick |
Description
The IWC Portofino Chronograph IW3731-05 has a Yellow gold case with a diameter of 35.00mm, which holds the 'MecaQuartz' caliber 631 chronograph movement. The dial is White. This watch was available from ca. 1988 until 1998.
Movement
The JLC caliber 631 'Mecaquartz' caliber is a movement with a quartz base powering a mechanical chronograph; it has a total of 233 parts and can be considered quite complicated. It was most notably used by JLC itself and IWC.
| Type: | Quartz |
|---|---|
| Brand: | Jaeger-LeCoultre |
| Caliber: | 631 |
| Display: | Analog |
| Diameter: | 23.15 mm |
| Jewels: | 25 |
| Time: | Hours, Minutes, Small Seconds |
| Date: | Date |
| Chronograph: | Chronograph |
More watches using the Jaeger-LeCoultre 631 caliber
