Seiko Cal. 4539 - 728

The 4539-728 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-3cebfc2ae9fd]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1991

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