Specifications
| Reference | GM-131-6 |
| Case | High-grade stainless steel (316 L) |
| IP black plating | With 5 micron |
| Dimension | Size approx. 50×44 mm without crown |
| Movement | Automatic with 21 jewels |
| VPH | 28800 |
| Specials | Anti-shock protection |
| Hands | Skeleton |
| Dial | Index |
| Numerals | Arabic |
| Buckle | Deployment buckle |
| Band | Genuine leather |
| Top Ring | 12 screws |
| Design | Tonneau |
| Warranty | 2-year warranty |
| Water-Resistant | 5 ATM |
| Brand | Theorema Germany |
| Packaging | Original Theorema box |
| Sold by | Tufina since 1828 |
| Included | Manual, warranty & Tufina future $50 gift card |
