Seiko Cal. 5656 - 578

This Quartz model from 1976 features a 42mm PVD Black case. Powered by the 5656 caliber with 34j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-1f5c45e1fcf8]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1976

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