Seiko Cal. 5660 - 138

The Seiko 5660-138 represents an important milestone in Seiko's 1989 lineup. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-8e473f58549a]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1989

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