Seiko Cal. 3818 - 368

The Seiko 3818-368 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-d95039e4f3a9]

Also known as: Sumo, Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1981

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