Seiko Cal. 4552 - 765

This Spring Drive model from 1976 features a 44mm Stainless Steel case. Powered by the 4552 caliber with 23j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-e879fcb563a7]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1976

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