Seiko Cal. 4554 - 706

This Spring Drive model from 1976 features a 40mm Stainless Steel case. With its 19mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-c24c9f885873]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1976

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