Seiko Cal. 5660 - 571

This Quartz model from 1977 features a 40mm Two-Tone case. With its 21mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-4cf2644bbbad]

Also known as: Helmet, Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1977

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