Seiko Cal. 4538 - 715

Released in 1982, the Cal. 4538 with design code 715 was part of Seiko's domestic market collection. With its 20mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-e1a77fa60ba2]

Also known as: Monster, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1982

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