Seiko Cal. 4475 - 131

Released in 1970, the Cal. 4475 with design code 131 was part of Seiko's domestic market collection. With its 21mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-4799fb12fc13]

Also known as: Helmet, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1970

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