Seiko Cal. 5613 - 583

This Spring Drive model from 1970 features a 37mm Two-Tone case. With its 20mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-292eb82a2e5b]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1970

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