Seiko Cal. 6664 - 731

The Seiko 6664-731 represents an important milestone in Seiko's 1990 lineup. Powered by the 6664 caliber with 17j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-b2c5dd3bc403]

Also known as: Samurai, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1990

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