Seiko Cal. 4539 - 736

The Seiko 4539-736 represents an important milestone in Seiko's 1981 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-f0e0658b8a87]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1981

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