Seiko Cal. 4431 - 999

The Seiko 4431-999 represents an important milestone in Seiko's 1980 lineup. Powered by the 4431 caliber with 28j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-c88b0a72d725]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1980

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