Seiko Cal. 5647 - 138

The Seiko 5647-138 represents an important milestone in Seiko's 1979 lineup. Powered by the 5647 caliber with 34j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-91dd35fd17fa]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1979

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