Seiko Cal. 5633 - 557

This Hand-Winding model from 1976 features a 35mm PVD Black case. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-8b5dfd5b3aaa]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1976

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