Seiko Cal. 4537 - 178

This Spring Drive model from 1986 features a 46mm PVD Black case. Powered by the 4537 caliber with 19j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-255898c595ab]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1986

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