Seiko Cal. 4431 - 610

Released in 1974, the Cal. 4431 with design code 610 was part of Seiko's domestic market collection. Powered by the 4431 caliber with 20j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-57c7765a9534]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1974

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