Seiko Cal. 5291 - 381

This Hand-Winding model from 1966 features a 41mm Hardlex-Coated Steel case. With its 22mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-cd8ad8d5740f]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1966

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