Seiko Cal. 4431 - 772

The Seiko 4431-772 represents an important milestone in Seiko's 1971 lineup. Powered by the 4431 caliber with 36j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-143b66806d7a]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1971

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