Seiko Cal. 6656 - 581

The Seiko 6656-581 represents an important milestone in Seiko's 1969 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-568dc281ba56]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1969

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