Seiko Cal. 4520 - 818

The Seiko 4520-818 represents an important milestone in Seiko's 1975 lineup. With its 22mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-dafff72a4f99]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1975

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