Seiko Cal. 4431 - 906

The 4431-906 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4431 caliber with 34j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-2d44d1ba6f78]

Also known as: Samurai, UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1983

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