Seiko Cal. 4538 - 737

This Hand-Winding model from 1974 features a 43mm Titanium case. Powered by the 4538 caliber with 28j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-4f364e8f99f9]

Also known as: Shogun, Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Burgundy

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1974

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