Seiko Cal. 6627 - 504

This Spring Drive model from 1972 features a 41mm Hardlex-Coated Steel case. With its 18mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-56e19b714055]

Also known as: Tuna, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1972

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