| Zenith Watch Index | Internet Wristwatch Index | How to regulate mechanical watches |
| plt = platinum, y = yellow, p = pink, w = white, PR = power reserve, size = Diameter (mm), thickness = height |
| Open Grande Date T |
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| Case | Bracelet | Dial | Diameter (mm) | Calibre | Model Number | |
| rose gold | brown leather | silver | 46.5 | EL PRIMERO 4039 SC | 18.0526.4039/01.C649 | |
| rose gold | brown rubber | silver | 46.5 | EL PRIMERO 4039 SC | 18.0526.4039/01.R650 | |
| rose gold | rose gold | silver | 46.5 | EL PRIMERO 4039 SC | 18.0526.4039/01.M526 | |
| Open Grande Date Multicity | |||||
| Case | Bracelet | Dial | Diameter (mm) | Calibre | Model Number |
| rose gold | brown leather | silver | 46.5 | EL PRIMERO 4037 SC | 18.0526.4037/01.C649 |
| rose gold | brown rubber | silver | 46.5 | EL PRIMERO 4039 SC | 18.0526.4037/01.R650 |
| rose gold | rose gold | silver | 46.5 | EL PRIMERO 4039 SC | 18.0526.4037/01.M526 |
| Zenith Watch Index | Internet Wristwatch Index | How to regulate mechanical watches |
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