Seiko Cal. 4437 - 728

This Spring Drive model from 1971 features a 41mm Titanium case. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-3aa0b82ad2ae]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1971

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