Seiko Cal. 3818 - 400

This Quartz model from 1975 features a 34mm Stainless Steel case. Powered by the 3818 caliber with 21j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-e8eaa43f06ce]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

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