Seiko Cal. 5631 - 947

The Seiko 5631-947 represents an important milestone in Seiko's 1965 lineup. With its 20mm lug width and 14.0mm profile, it sits comfortably on most wrists. [seikata-wm-28665d459c55]

Also known as: Samurai

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

14.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1965

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