Seiko Cal. 3870 - 484

The Seiko 3870-484 represents an important milestone in Seiko's 1981 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-06ed20f1f4a6]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1981

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