Seiko Cal. 6664 - 446

The Seiko 6664-446 represents an important milestone in Seiko's 1978 lineup. Powered by the 6664 caliber with 31j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-33afbfb6a03e]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1978

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