Seiko Cal. 5631 - 150

The 5631-150 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-20bd6b7bec14]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

26j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1988

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