Seiko Cal. 5631 - 393

The 5631-393 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-8a42d47b526c]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1984

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