Seiko Cal. 5290 - 631

This Spring Drive model from 1971 features a 44mm Gold-Plated case. Powered by the 5290 caliber with 23j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-d78f1029b3ef]

Also known as: Turtle, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1971

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