Switzerland| Brand | Louis Erard | 
|---|---|
| Collection | 1931 | 
| Model | 31218 AA03.BDC36 | 
| Gender/Type | Men | 
| Watch Style | Classic, Luxury | 
| Movement | Automatic self-wind | 
| Caliber mechanism | ETA 2824 | 
| Impermeability | 30 M (99 Foot) | 
| Width | 42 | 
| Case | Stainless steel | 
| Case Colour | Steel | 
| Glass | Anti-reflective sapphire | 
| Clock Face | Arabic numerals, Indices | 
| Dial Colour | Grey | 
| Strap/Bracelet Material | Leather | 
| Strap/Bracelet Colour | Grey | 
| Functions | Date, Month, Moon phase, Week day | 
| Features | Transparent case back |