Seiko Cal. 6137 - 990

The Seiko 6137-990 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-c12aef53112b]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1977

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