Seiko Cal. 4539 - 920

The Seiko 4539-920 represents an important milestone in Seiko's 1979 lineup. It features a Silver dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-b688929250f8]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1979

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