Seiko Cal. 4438 - 567

Released in 1972, the Cal. 4438 with design code 567 was part of Seiko's domestic market collection. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-994d0de9df27]

Also known as: Sumo, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1972

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