Seiko Cal. 5665 - 731

This Spring Drive model from 1972 features a 44mm Titanium case. Powered by the 5665 caliber with 34j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-9704662dfa4f]

Also known as: Turtle, Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1972

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