Seiko Cal. 4550 - 251

This Hand-Winding model from 1972 features a 41mm Stainless Steel case. With its 18mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-1ec6758dcc79]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1972

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