Seiko Cal. 6640 - 570

This Quartz model from 1986 features a 37mm PVD Black case. With its 18mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-46d8525a1108]

Also known as: Goldfeather

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1986

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