Seiko Cal. 4431 - 987

The 4431-987 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4431 caliber with 27j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-b12091104038]

Also known as: Samurai, Goldfeather

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1976

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