Seiko Cal. 6393 - 651

This Spring Drive model from 1978 features a 43mm Titanium case. With its 21mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-dc60f2f43ce1]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1978

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