Seiko Cal. 4521 - 475

The 4521-475 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-511ea05c6ef8]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1973

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