Seiko Cal. 4539 - 664

The Seiko 4539-664 represents an important milestone in Seiko's 1988 lineup. It features a White dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-65a1642d507c]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1988

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