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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1  Fig. 2 | Seiko 7S26A Features automatic no manual wind sweep second day: quickset, 2 languages date: quickset Data 12''', Dm= 27.0mm, Do= 27.4mm H= 5.0mm (ball bearing +0.15mm, dial spacer +0.25mm) F= 1.65mm T= 1.75mm 21 jewels f = 21600 A/h power reserve 43h Balance staff Seiko 31020 Stem Seiko 351260 Mainspring / battery Seiko 201024 Hands 1.50 x 0.90 x 0.20mm Comments about the data | Remarks 1995- sophisticated excenter self-winding mechanism with just one gear stage (details cf. 7S26B) family/generations: first generation 7001A: - 7002A: Date new date mechanism 7005A: date 7006A: day, date 7025A: date, small rotor day setting by pushing crown 7009A: day, date, 17 jewels 7015A, 7017A: day, date, chronograph 60s 7016A: day, date, chronograph 60s, 30min, 12h 7018A,B: day, date, chronograph 60s, 30min, 23 jewels 7019A: day, date, 21 jewels 7039A: finer finished 7019A quickset day and date 7S26A: day, date, 21 jewels 7S36A: day, date, 23 jewels new regulator 7S26B: day, date, 21 jewels 7S36B: day, date, 23 jewels Example, year: signature; shock device 1996: Seiko Time Corp. 7S26A, Japan, 21 Jewels - 160282S; Seiko Not for Sale! The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating. |
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