Seiko Cal. 6668 - 783

The Seiko 6668-783 represents an important milestone in Seiko's 1973 lineup. It features a White dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-93e361a41d4f]

Also known as: Monster, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1973

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