Seiko Cal. 6313 - 581

This Spring Drive model from 1967 features a 40mm Hardlex-Coated Steel case. With its 20mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-be80758abbe4]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1967

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