Seiko Cal. 5634 - 957

This Hand-Winding model from 1977 features a 43mm Hardlex-Coated Steel case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-585b57481e69]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1977

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