Seiko Cal. 3880 - 712

The Seiko 3880-712 represents an important milestone in Seiko's 1970 lineup. It features a Green dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-17debac3dabe]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1970

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