Seiko Cal. 5630 - 431

The Seiko 5630-431 represents an important milestone in Seiko's 1972 lineup. Powered by the 5630 caliber with 18j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-a66665209340]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1972

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