Seiko Cal. 6393 - 388

This Spring Drive model from 1987 features a 45mm Hardlex-Coated Steel case. With its 19mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-657cb47bc442]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1987

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