Seiko Cal. 7178 - 287

This Spring Drive model from 1965 features a 36mm Hardlex-Coated Steel case. Powered by the 7178 caliber with 34j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-dba4a5efb1b3]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1965

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