Seiko Cal. 5621 - 378

This Spring Drive model from 1991 features a 42mm Stainless Steel case. With its 22mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-94e55f036a1e]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1991

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