Seiko Cal. 6640 - 598

This Hand-Winding model from 1973 features a 43mm Titanium case. With its 20mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-e1328692624b]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1973

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