| Model | Blue Hour Midsize Ballpoint Pen |
| Ident No. | 112891 |
| Writing System | |
| Writing System | Ballpoint Pen with twist mechanism |
| Nib | – |
| Features | |
| Barrel | Engraved hexagon pattern, coated with blue lacquer |
| Cap | Engraved hexagon pattern, coated with blue lacquer, inlaid with Montblanc emblem |
| Trim | Three platinum-coated rings embossed with Montblanc brand name |
| Clip | Platinum-coated clip with individual serial number |
| Special Characteristics | – |