Seiko Cal. 5637 - 657

This Automatic model from 1975 features a 44mm PVD Black case. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-4c3a54d75ed6]

Also known as: Samurai

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1975

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