Seiko Cal. 5698 - 138

The Seiko 5698-138 represents an important milestone in Seiko's 1969 lineup. Powered by the 5698 caliber with 21j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-b28a110ddeff]

Also known as: Helmet, World Timer

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1969

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