Seiko Cal. 6664 - 643

The Seiko 6664-643 represents an important milestone in Seiko's 1976 lineup. It features a Cream dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-ccc1013670e7]

Also known as: Helmet, Goldfeather

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1976

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