Seiko Cal. 5660 - 691

This Spring Drive model from 1967 features a 35mm PVD Black case. With its 18mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-37eb4f3336df]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

32j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1967

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