Seiko Cal. 3870 - 405

The Seiko 3870-405 represents an important milestone in Seiko's 1988 lineup. It features a Green dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-4f09b52d22af]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1988

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