Seiko Cal. 6664 - 378

The Seiko 6664-378 represents an important milestone in Seiko's 1985 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-ad17a12e256f]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1985

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