Seiko Cal. 3861 - 643

The Seiko 3861-643 represents an important milestone in Seiko's 1980 lineup. It features a Cream dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-818d07edbd2d]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1980

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