Seiko Cal. 4539 - 660

This Spring Drive model from 1991 features a 42mm Gold-Plated case. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-4b800d7e9402]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1991

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