IWC - IW3540-03
IW3540-03 Ingenieur SL Perpetual Calendar / Strap / English
| Case Material: | Yellow Gold |
|---|---|
| Case Glass: | Sapphire |
| Case Back: | Closed |
| Case Shape: | Cushion |
| Case Diameter: | 34.50 mm |
| Water Resistance: | 30.00 m |
| Dial Color: | White |
|---|---|
| Dial Indexes: | Stick / Dot |
| Dial Hands: | Stick |
Description
The ref. IW 3540-003 has a yellow gold case and a leather strap. Earlier versions were powered by caliber 35780; later ones (post 1989) feature caliber 35782.