Seiko Cal. 7138 - 254

The Seiko 7138-254 represents an important milestone in Seiko's 1979 lineup. Powered by the 7138 caliber with 17j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-e0437c88f26e]

Also known as: Navigator, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1979

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