Seiko Cal. 5641 - 575

This Spring Drive model from 1969 features a 41mm Titanium case. With its 20mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-dd1b4f6da93c]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

33j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1969

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