Seiko Cal. 3813 - 371

The Seiko 3813-371 represents an important milestone in Seiko's 1978 lineup. Powered by the 3813 caliber with 30j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-4658ba6325ec]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1978

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