Seiko Cal. 3818 - 521

This Spring Drive model from 1967 features a 34mm Titanium case. Powered by the 3818 caliber with 25j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-d9aa45eb10e4]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1967

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