Seiko Cal. 4431 - 540

The Seiko 4431-540 represents an important milestone in Seiko's 1993 lineup. Powered by the 4431 caliber with 23j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-b6f156a49f1e]

Also known as: Goldfeather

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1993

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