Seiko Cal. 5638 - 146

This Hand-Winding model from 1987 features a 36mm Hardlex-Coated Steel case. Powered by the 5638 caliber with 21j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-764d7388a14d]

Also known as: Navigator, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1987

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