Seiko Cal. 4431 - 786

The Seiko 4431-786 represents an important milestone in Seiko's 1974 lineup. Powered by the 4431 caliber with 18j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-39080cec379b]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1974

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