Seiko Cal. 5660 - 612

The Seiko 5660-612 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-250331c39fcb]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1987

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