Seiko Cal. 6388 - 178

This Spring Drive model from 1987 features a 37mm Hardlex-Coated Steel case. Powered by the 6388 caliber with 30j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-dcd3a3841bdd]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1987

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