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Calibers produced by Seiko (Japan)
Seiko Group Corporation
- Seiko 4M21A
- Seiko 5M42A
- Seiko 5M43A
- Seiko 7S26A
- Seiko 7S26B
- Seiko 7S36A
- Seiko 7S36B
- Seiko 11A
- Seiko 63A
- Seiko 66A
- Seiko 66B
- Seiko 436
- Seiko 1100A
- Seiko 2202A
- Seiko 2205A
- Seiko 2206A
- Seiko 2220A
- Seiko 2501A
- Seiko 2501B
- Seiko 2505A
- Seiko 2505B
- Seiko 2517A
- Seiko 2517B
- Seiko 3702B
- Seiko 3703B
- Seiko 4005A
- Seiko 4006A
- Seiko 4205A
- Seiko 4205B
- Seiko 4206A
- Seiko 4206B
- Seiko 4207B
- Seiko 4361
- Seiko 5601A
- Seiko 5605A
- Seiko 5606A
- Seiko 5619A
- Seiko 5621A
- Seiko 5621B
- Seiko 5625A
- Seiko 5625B
- Seiko 5626A
- Seiko 5626B
- Seiko 5641A
- Seiko 5645A
- Seiko 5646A
- Seiko 6105A
- Seiko 6105B
- Seiko 6106A
- Seiko 6106B
- Seiko 6106C
- Seiko 6117A
- Seiko 6117B
- Seiko 6118A
- Seiko 6119A
- Seiko 6119B
- Seiko 6119C
- Seiko 6138A
- Seiko 6138B
- Seiko 6139A
- Seiko 6139B
- Seiko 6206B
- Seiko 6308A
- Seiko 6309A
- Seiko 6310A
- Seiko 6319A
- Seiko 6347A
- Seiko 6349A
- Seiko 6601A
- Seiko 6601B
- Seiko 6602B
- Seiko 6606B
- Seiko 6619A
- Seiko 7001A
- Seiko 7002A
- Seiko 7005A
- Seiko 7006A
- Seiko 7009A
- Seiko 7015A
- Seiko 7016A
- Seiko 7017A
- Seiko 7018A
- Seiko 7018B
- Seiko 7019A
- Seiko 7039A
- Seiko 7625D