Seiko Cal. 5678 - 764

This Spring Drive model from 1972 features a 38mm Hardlex-Coated Steel case. Powered by the 5678 caliber with 29j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-bd749325f456]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1972

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