Seiko Cal. 3831 - 658

The Seiko 3831-658 represents an important milestone in Seiko's 1974 lineup. Powered by the 3831 caliber with 22j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-095ba2f865a7]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1974

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