Seiko Cal. 4538 - 366

The Seiko 4538-366 represents an important milestone in Seiko's 1974 lineup. With its 18mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-1ef94f20d228]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1974

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