Seiko Cal. 4538 - 383

The Seiko 4538-383 represents an important milestone in Seiko's 1972 lineup. With its 18mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-baba9fe09758]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1972

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