Seiko Cal. 5645 - 580

The Seiko 5645-580 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-265b5777a15c]

Also known as: Monster, Rally

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1965

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