Seiko Cal. 4539 - 863

The Seiko 4539-863 represents an important milestone in Seiko's 1981 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-ebbfdb95a2d7]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1981

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