Seiko Cal. 4538 - 506

Released in 1973, the Cal. 4538 with design code 506 was part of Seiko's domestic market collection. With its 19mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-5497cd6eb0ec]

Also known as: Helmet, UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1973

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