Seiko Cal. 5687 - 731

This Kinetic model from 1981 features a 46mm Stainless Steel case. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-ad7643385c4b]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1981

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