| 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 |
| GT Moonphase |
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| Case | Bracelet | Dial | Diameter (mm) | Calibre | Model Number | |
| steel | black leather | silver | n/a | EL PRIMERO 4001 | 03.1240.4001/02.C495 | |
| steel | brown leather | silver | n/a | EL PRIMERO 4001 | 03.1240.4001/02.C496 | |
| steel | steel | silver | n/a | EL PRIMERO 4001 | 03.1240.4001/02.M1240 | |
| gold | black leather | silver | n/a | EL PRIMERO 4001 | 35.1240.4001/02.C495 | |
| gold | brown leather | silver | n/a | EL PRIMERO 4001 | 35.1240.4001/02.C496 | |
| gold | gold | silver | n/a | EL PRIMERO 4001 | 35.1240.4001/02.M1240 | |
| rose gold | black leather | silver | n/a | EL PRIMERO 4001 | 18.1240.4001/02.C495 | |
| rose gold | brown leather | silver | n/a | EL PRIMERO 4001 | 18.1240.4001/02.C496 | |
| rose gold | rose gold | silver | n/a | EL PRIMERO 4001 | 18.1240.4001/02.M1240 | |
| white gold | black leather | silver | n/a | EL PRIMERO 4001 | 65.1240.4001/02.C495 | |
| white gold | brown leather | silver | n/a | EL PRIMERO 4001 | 65.1240.4001/02.C496 | |
| white gold | white gold | silver | n/a | EL PRIMERO 4001 | 65.1240.4001/02.M1240 | |
| Zenith Watch Index | Internet Wristwatch Index | How to regulate mechanical watches |
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