Seiko Cal. 5637 - 148

This Quartz model from 1972 features a 35mm PVD Black case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-ff059f6b3a01]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1972

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