Seiko Cal. 6688 - 579

This Automatic model from 1966 features a 37mm Stainless Steel case. Powered by the 6688 caliber with 18j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-30723f1a1dfb]

Also known as: Bullhead, World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1966

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