Seiko Cal. 5631 - 817

The 5631-817 is a sought-after Kinetic piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-e77da1fb0525]

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1967

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