Seiko Cal. 5666 - 321

This Automatic model from 1973 features a 36mm Titanium case. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-fd84809f878c]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1973

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