Seiko Cal. 6642 - 784

The Seiko 6642-784 represents an important milestone in Seiko's 1984 lineup. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-ef8c4cfa0e51]

Also known as: Tuna, Pogue

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1984

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