Seiko Cal. 6138 - 140

The Seiko 6138-140 represents an important milestone in Seiko's 1972 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-f766f5b03099]

Also known as: Sumo, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1972

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