Seiko Cal. 5663 - 138

The Seiko 5663-138 represents an important milestone in Seiko's 1974 lineup. Powered by the 5663 caliber with 24j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-eaaba1be4d3c]

Also known as: Turtle

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1974

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