Seiko Cal. 4539 - 672

The Seiko 4539-672 represents an important milestone in Seiko's 1974 lineup. With its 18mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-3ef1e038f233]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1974

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