Seiko Cal. 6663 - 946

The Seiko 6663-946 represents an important milestone in Seiko's 1974 lineup. It features a Black dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-10265cb7ec41]

Also known as: Tuna, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1974

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