Seiko Cal. 6689 - 688

The Seiko 6689-688 represents an important milestone in Seiko's 1966 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-4fa8ad3ed6de]

Also known as: Helmet, Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1966

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