Seiko Cal. 6642 - 769

The Seiko 6642-769 represents an important milestone in Seiko's 1979 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-86b63b8a309e]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1979

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