Seiko Cal. 5631 - 933

The 5631-933 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5631 caliber with 30j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-64c84aff576c]

Also known as: Shogun, Navigator

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1968

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