Seiko Cal. 4431 - 966

The 4431-966 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-5fbee8138b96]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1997

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