Seiko Cal. 4550 - 591

This Hand-Winding model from 1971 features a 44mm Stainless Steel case. It features a Silver dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-db240f6bf4e2]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1971

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