Seiko Cal. 5660 - 729

The Seiko 5660-729 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-b059f07f63ec]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1987

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