Seiko Cal. 4537 - 978

The Seiko 4537-978 represents an important milestone in Seiko's 1981 lineup. It features a Black dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-f6945de7ab02]

Also known as: Monster, World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1981

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