Seiko Cal. 6654 - 423

The Seiko 6654-423 represents an important milestone in Seiko's 1966 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-0288db63924a]

Also known as: Samurai, Monster

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1966

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