Seiko Cal. 5628 - 764

Released in 1969, the Cal. 5628 with design code 764 was part of Seiko's domestic market collection. With its 22mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-73acbd1fe7f6]

Also known as: Monster, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1969

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