Seiko Cal. 5656 - 581

The Seiko 5656-581 represents an important milestone in Seiko's 1973 lineup. Powered by the 5656 caliber with 18j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-8710dda1e268]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1973

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