Seiko Cal. 5643 - 137

This Spring Drive model from 1977 features a 41mm PVD Black case. Powered by the 5643 caliber with 23j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-9e80e96eb277]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1977

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