Seiko Cal. 3861 - 581

The Seiko 3861-581 represents an important milestone in Seiko's 1974 lineup. It features a Green dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-bbdf9de44fee]

Also known as: Sumo, Bellmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1974

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