Seiko Cal. 5258 - 438

The Seiko 5258-438 represents an important milestone in Seiko's 1967 lineup. Powered by the 5258 caliber with 36j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-66182f1da5d1]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1967

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