Seiko Cal. 5689 - 731

The Seiko 5689-731 represents an important milestone in Seiko's 1976 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ad94718c8384]

Also known as: Turtle, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1976

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