Seiko Cal. 5635 - 578

This Hand-Winding model from 1981 features a 37mm Stainless Steel case. Powered by the 5635 caliber with 23j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-c29aa27f1106]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1981

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