Seiko Cal. 6657 - 915

This Quartz model from 1977 features a 39mm PVD Black case. With its 19mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-55632ba41380]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1977

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