Seiko Cal. 3817 - 488

The Seiko 3817-488 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-ddc970b897f7]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1977

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