Seiko Cal. 5613 - 580

This Hand-Winding model from 1971 features a 40mm Hardlex-Coated Steel case. With its 21mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-37694f433aa4]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1971

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