Seiko Cal. 7137 - 391

The Seiko 7137-391 represents an important milestone in Seiko's 1984 lineup. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-f0ae8e10e418]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1984

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