Seiko Cal. 3813 - 454

The Seiko 3813-454 represents an important milestone in Seiko's 1981 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-16e5b1a05156]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1981

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