Seiko Cal. 3813 - 930

The Seiko 3813-930 represents an important milestone in Seiko's 1974 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-56952d94abef]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1974

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