Seiko Cal. 3813 - 647

The Seiko 3813-647 represents an important milestone in Seiko's 1969 lineup. Powered by the 3813 caliber with 18j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-e5ab0417db6a]

Also known as: Golden Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1969

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