Seiko Cal. 4431 - 673

The Seiko 4431-673 represents an important milestone in Seiko's 1965 lineup. Powered by the 4431 caliber with 33j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-8e4f5c430670]

Also known as: Samurai, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Cream

Jewels

33j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1965

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