Seiko Cal. 3821 - 305

This Spring Drive model from 1973 features a 45mm Titanium case. With its 21mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-d167ee0d198d]

Also known as: Shogun, Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1973

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