Seiko Cal. 6642 - 404

The Seiko 6642-404 represents an important milestone in Seiko's 1978 lineup. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ea7934dfaaaa]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1978

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