Seiko Cal. 7138 - 242

The Seiko 7138-242 represents an important milestone in Seiko's 1984 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-abab998ff727]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1984

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