Seiko Cal. 5634 - 857

This Hand-Winding model from 1970 features a 46mm PVD Black case. With its 18mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-7a561ea2bc74]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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