Seiko Cal. 4550 - 200

This Hand-Winding model from 1974 features a 37mm Stainless Steel case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-292b596e5630]

Also known as: Helmet, Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1974

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