Seiko Cal. 6627 - 879

This Spring Drive model from 1971 features a 35mm Stainless Steel case. Powered by the 6627 caliber with 30j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-b7f73f11f350]

Also known as: Tuna, Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1971

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