Seiko Cal. 6227 - 640

This Spring Drive model from 1976 features a 34mm Stainless Steel case. With its 19mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-5332c1bec70c]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1976

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